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Video Game / Sonic Robo Blast 2

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Sonic Robo Blast 2 is a 3D freeware fangame based on the Sonic the Hedgehog games and created on the Doom Legacy engine. It was started in 1998, and has been in development ever since.

It is a sequel to Sonic Robo Blast, a very crude fangame by a user named Sonikku. It was created in the Klik And Play game making program, and was very primitive and quite buggy. Despite this, the game is full of secrets, and is renowned for being one of the first Sonic fangames ever created.

It was started in 1998 and was intended to be a 2D game similar to its predecessor. This concept was scrapped when the team (at the time made up of users SSNTails and Sonikku) decided to make the game using the 3D Doom Legacy engine. Early tech demos featured basic Sonic gameplay but still showed its Doom origins. As more releases came out, the game consistently became more Sonic-like, as well as adding online netplay including Co-op in the single-player levels, a unique Deathmatch system, Capture the Flag, and racing.


In 2005, the inaccurately titled "Final Demo" Version 1.09.4 was released, and development was considered to have stalled for 4 years. In 2009, Version 2.0 was released and was the biggest update to the game, containing 7 new single-player levels, an overhauled Match system, and a lot of new options for level-developers. The current version, 2.1, was finally released in mid-March of 2014 after 4 long years of wait, containing level updates, graphics revamps, new stages (single and multiplayer) and more.


This game contains examples of the following tropes:

  • Ascended Fanboy: Two longtime developers (SSNTails and Spazzo) of SRB2 have gone on to monetize their hobby with Roly Poly Putt, an app for iOS. Some of the game's art might look a bit familiar, however...
  • All Deserts Have Cacti: Arid Canyon Zone, justified as it is inspired by Road Runner cartoons and the Grand Canyon. Averted by the multiplayer stage Desolate Twilight, which has no cacti whatsoever.
  • All There in the Manual: Knuckles' purpose for helping Sonic is only stated on the game's website. (In a somewhat shoehorned fashion, too.)
    • There exists Dummied Out cutscene data that was meant to be used after GFZ3 to insert Knuckles into the story.
  • Art Evolution: As the game evolved, the characters eventually took on a hand-drawn and digitized sort of look. By 2.1, Knuckles got his sprites entirely reworked and looking more like something in line with the game sprites from the main series or Sonic Advance Trilogy, with Sonic and Tails set to receive the same treatment in 2.2 (although the downloadable FSonic character mod serves as a preview of Sonic's new sprites, combined with new abilities that won't carry into the next version).
  • Batman Can Breathe in Space: Somehow averted. Going into any areas in Egg Rock Zone that are in open space will begin a countdown much like in the underwater levels that appear seconds before the player drowns. With space, the countdown timer begins immediately. Played straight with the special stage Black Hole Zone, though this one gets handwaved by Sonic being in Super Mode.
  • Big Fancy Castle: Castle Eggman Zone, thanks to both acts being ripe with Marathon Level.
  • Bleak Level: Castle Eggman Zone, on behalf of it being the first of Eggman's personal headquarters with dull colors and constant rain and thunderstorms running throughout. It also represents a big Difficulty Spike thanks to being filled with many stage hazards and pits.
  • Bonus Level of Heaven: Aerial Garden Zone, unlocked by completing the main game with all emeralds.
  • Bonus Stage: Older versions of the game had players traverse around an open area, tasking them with collecting a set number of rings within a time limit. Newer versions are basically fanmade levels from NiGHTS into Dreams..., played as Super Sonic.
  • Boss-Only Level: As with Sonic 3D: Flickies' Island, the third act of every Zone is an arena where Eggman is faced in one of his machines.note 
  • Boss Remix: Inverted; the music for Castle Eggman Zone is a remix of the boss theme.
  • Bottomless Pits: They start appearing at Deep Sea Zone. Later, you'll see that the final part of Arid Canyon Zone, for example... is hilarious. And Egg Rock Zone plays more like a Mega Man level than a Sonic level. It even includes a few disappearing platform puzzles!
  • Brutal Bonus Level: Azure Temple Zone, a very difficult underwater level unlocked by completing Aerial Garden Zone.
    • The special stages have Black Hole Zone, which can only be unlocked by A ranking the other 7 special stages, a feat in itself.
  • Call-Back: Quite a few areas are designed to resemble stages in previous Sonic games. For example, the red skyscrapers in the outdoor sections of Techno Hill Zone Act 2 resemble the upper reaches of Chemical Plant Zone.
  • Cast from Hit Points: In competitive-based gametypes outside of Competition and Race, players attack each other by throwing rings — the same rings used to protect themselves from attacks. When using one of the special Weapon Ring types; the player consumes one standard Ring and one Weapon Ring for each ring tossed.
  • Death Mountain: Rocky Mountain Zone would have been this as well as That One Level until it was essentially turned into Arid Canyon Zone, which still fits the bill — rockslides, crumbling terrain, chunks of the ceiling that conveniently collapse when you cross under them, and of course, some lethally steep drop-offs.
  • Difficult, but Awesome: Sonic himself doesn't have Tails's flight abilities, or Knuckles's glide and climb abilities. That said, he is the fastest, and, since the stages were built with him in mind, the most fun.
  • Difficulty Spike:
    • Castle Eggman Zone. Despite being only the fourth zone, the fact that you're on Eggman's turf means there's plenty of traps — spikes on chains, flamethrowers, and collapsing platforms. Plus, the two Acts require maneuvering through lots of tricky platforming segments.
    • Largely due to the fact that the game is incomplete, but Egg Rock Zone counts as a spike up the unsuspecting player's rear end, as you leap from the sixth zone to the eighth/ninth zone in an instant. In this sense, Red Volcano Zone is something of a Breather Level before the game starts trying out dozens of ways to destroy your sanity.
    • The sixth Special Stage, Magma Caves Zone, is an enormous leap in difficulty compared to the relatively hazard-free first five (except for the fifth Special Stage's somewhat low time limit).
  • Dummied Out:
    • Mine Maze Zone was planned to be a Dug Too Deep level before being merged into Arid Canyon.
    • Additionally, there are several beta rooms inside Egg Rock Zone Act 2 accessible only with the NOCLIP command.
    • The Chaos gametype was cut back in version 1.09; however, Chaos Enemy Spawns can still be placed, and it's possible to re-enable the (now half-broken) gametype with EXE modding.
    • Christmas and Adventure modes were removed in 2.0. The former caused lots of consistency errors in netgames, the latter was only a test and not particularly well-liked.
    • Some of the textures and flats from Zim's Base Zone still exist, too.
    • The original special stage music from Versions 2.0 and earlier has been replaced with songs from the Mystic Realm soundtrack for the new NiGHTS-themed special stages in Version 2.1. The original song is still in the game's files as an unused song, however.
    • The old version of Brak Eggman that appeared in a scrapped version of Egg Rock Act 3 still exists as an object in the game.
  • Easter Egg: The Ultimate Cheat, which closes the game when activated; the Disco Room in Egg Rock Zone; and literal easter eggs which only appear in old versions of the game.
  • Elite Mook: You know those silly, weak Crawlas running around the early stages? Well, the hovering, hopping, lunge-attacking Crawla Commander is neither silly nor weak. It's also the only enemy that takes two hits to smash, changing its attack pattern when damaged.
  • Embedded Precursor: An incomplete remake of SRB1 (with no bosses yet) can be unlocked in the game. It serves as something of an amusing reminder of the more primitive days of Sonic fangaming.
  • Eternal Engine: Techno Hill Zone, Egg Rock Zone, and several multiplayer stages with those themes.
  • Exactly What It Says on the Tin: There's the Castlebot Facestabber, which appears in Castle Eggman Zone, is a robot, and stabs your face.
  • Freeware Games
  • Fun with Acronyms:
    • The Stupid Dumb Unnamed Robo Fish is exactly what you would expect it to be.
    • An enemy called the Bird Aircraft Strike Hazard, that flies at a high speed towards you.
  • Gang Up on the Human: Approach a group of enemies and then leave them unharmed. Then watch as they form a line and go after you. Also, never do this to a group of flying enemies. Just don't.
  • Game Mod: The game itself is an open-source mod of the Doom Legacy engine, and the community promotes user-created levels and characters with a section for releases on the official forums and a bimonthly contest for level designers that anyone can take part in. One of the most well known mods is The Mystic Realm, which adds eight new zones and was made by Mystic, the current lead developer and senior community member.
  • The Goomba: Crawlas. Also, real Goombas straight from Super Mario Bros. appear in a secret level.
  • Gravity Screw: Egg Rock Zone, so much. Of both 'The Variable Gravity Chamber' and the 'Fun With Gravity' variety. Twisted Terminal Zone's main gimmick is this.
  • Green Hill Zone: Greenflower Zone, Jade Valley Zone and Meadow Match Zone. Sapphire Falls contains Green Hill Zone textures and music.
  • Guide Dang It!: The rotating chains in Castle Eggman Zone that allow the player to launch higher in the air can be a pain to work with since they move so slowly and never seem to throw the player far enough. What the game doesn't tell you is that trying to move while hooked on one speeds it up and launches you significantly further, which is a necessity if you take a certain route at the end of act two.
  • Guilt-Based Gaming: Of the various funny phrases the game can throw at you when you try to quit, few punch as hard as "You're trying to say that Sonic2K6 is better than this, aren't you?"
  • Hailfire Peaks: Techno Hill Zone's first act is a mix of Green Hill Zone and Eternal Engine elementsnote , then it goes full-out Eternal Engine for the second.
  • Holiday Mode: There was a Christmas Mode, present from at least Demo 4 to Final Demo 1.09.4, which activated during the twelve days of Christmas (or any day of the year, when the program was launched with -xmas). Most of the game's more natural textures changed to have a more wintry feel (eg: dirt took on a frosty blue shade and grass turned into snow, while metal retained its texture), as well as changing some of the decorations in the game (flowers turning into poles and Christmas trees). Demo 4 even had a map exclusive to this mode, where you would search for Chaos Emeralds amongst Santa's workshop; this map was retained in later versions as "Emerald Hunt", available any day of the year. Christmas Mode was eventually deleted in 2.0, due to its tendency to riddle netgames with consistency errors.
  • Ice Palace: Ice Palace Zone from the SRB1 remake contain these. There's also the Diamond Blizzard Zone and Frost Columns Zone maps used in Match.
  • Idle Animation: As with the mainline Sonic games, all the playable characters do this if left idle for several seconds. Sonic taps his foot impatiently, Tails yawns, and Knuckles starts chuckling.
  • Inconveniently Placed Conveyor Belt: Techno Hill Zone and Egg Rock Zone feature these.
  • Invincible Minor Minion: Turrets cannot be harmed by the player at all, and can only be destroyed if the level is nice enough to provide a way to crush or submerge them.
  • Joke Level: Aerial Garden Zone is a serious unlockable, but was initially created as a ridiculous test map to see if the engine would cry from cramming 4 full acts of a Zone into a single, massive map that stretches out almost to the hardcoded map boundary. It proved to be playable with some tweaking, so they threw it in.
  • Kill 'Em All: Eggman wastes no time reducing the citizens of Greenflower City in the intro to charred skeletons. Chew on that, Genocide City Zone.
  • Ledge Bats: Egg Guards are usually an annoyance at best, but get them near a ledge and they become aggravating.
  • Lethal Lava Land: Red Volcano Zone. There's also a level in the SRB1 remake that's simply named "Volcano Zone", which has a lava pit that flushes you right off the 2D plane, right into a bottomless pit. Infernal Cavern and Molten Fissure from the multiplayer rotation also qualify.
  • Loads and Loads of Loading:
    • Not (usually) present in the main game, but in full effect in multiplayer. When attempting to join a netgame that has WADs the player does not have downloaded, the game will begin attempting to add each individual file to a "DOWNLOAD" folder located in the same directory as the main game. However, the download speed can be painfully slow, and if the size of one file exceeds over a few hundred kilos, the download either slows to a crawl or under most cases, stops completely, requiring the player to return to the title screen, go back into Multiplayer, and attempt to join the server again to start another download attempt. Sometimes, it won't even begin downloading the necessary file(s).
    • In net games themselves thanks to the outdated net code, "join lag" (a game-wide freeze whenever someone joins the server) is pretty much unavoidable, and woe be the other players if the joiner encounters a hitch of any sort in the process.
    • New in version 2.1 is the re-sync feature, which will pause the game and attempt to restore consistency to a player who de-synced rather than immediately kicking them from the game. If someone has a particularly nasty de-sync the game can be halted by re-sync attempts for several minutes.
  • Macro Zone: The Mini Sonic gimmick from Metallic Madness returns in Egg Rock Zone.
  • Marathon Level:
    • Egg Rock Zone Act 2 is an incredibly long and daunting gauntlet. Best stockpile lives in advance. (To make matters worse, Act 1 has possibly the largest collection of instant-death hazards in the game.)
    • Aerial Garden Zone. That's because it is made up of all 4 acts of Aerial Garden Zone from a popular mod, crammed into a single map. It just barely fits in the engine's limitations.
  • Nintendo Hard: Egg Rock Zone will probably eat up most of your lives the first time you play it. The Hyper Levels, a series of hidden stages, are also intended to invoke this.
  • No Ending: Granted, it's still an incomplete game.
  • Non-Indicative Name:
    • Deep Sea Zone is set inside a cave. In the earliest version of the game, however, it is set in the sea.
    • Zero Ring Zone may have been lacking in rings compared to other arenas, but there were rings to be found.
  • Not-So-Harmless Villain: In the main series, Eggman is an inept and comical villain. In this game, he starts things off by destroying a city and killing everyone in it.
  • Obvious Beta: Several acts are still missing (acts 2 and 3 of both Arid Canyon and Red Volcano Zones), and the Difficulty Spike from Red Volcano to Egg Rock is at least partly because there's at least one zone missing. Earlier releases were even more blatant about this trope.
  • One-Hit-Point Wonder: Per Sonic standard when you have no rings, but taken to the extreme in the hidden Ultimate Mode, which removes all rings and item boxes from the game. You also only have one life, which turns the game into an I Wanna Be the Guy-like suicidal Death Course where one scratch from anything, anywhere, is a ticket back to square one.
  • Oxygen Meter: As usual, with appropriate Hell Is That Noise music when you start to run low.
  • Palette Swap: In netgames, players can pick a custom color to play as, which expanded to 62 colors in 2.2.
  • Palmtree Panic: In older versions of the game, Emerald Coast Zone.
  • Platform Hell:
    • The latter half of the game. Unusual controls (for newbies, perhaps) and the lack of shadows cast beneath your characters twists the knife. Also the CTF stage Nimbus Ruins, which is nothing more than a few floating platforms above a giant death pit.
    • Most of the levels in the SRB1 remake have tricky platforming. It starts in Ice Palace Zone and gets sadistic once you get to Sky Lab Zone, which fortunately is a Knuckles-only level.
  • PVP Balanced: The three characters have their own strengths and weaknesses in the multiplayer modes.
    • Lightning Bruiser: Sonic players know to use and abuse his very fast and powerful jump dash, but without a Whirlwind Shield, he has problems climbing up stepped terrain quickly.
    • Weak, but Skilled: Tails is slow and not as effective as the others in a melee, but being able to fly around to nearly everywhere on a map is a plus and he makes a good sniper with the Rail Ring (or a good target for the Rail). This is an inversion of his Single Player prowess, where Tails is pretty much easy mode.
    • Mighty Glacier: Knuckles gets a faster firing (sorry, throwing) speed to compensate for his average agility and other movement disadvantages. This makes him excellent for area denial or just plain spamming projectiles. Although, he's also suprisingly good at cloak-and-dagger tactics, since gliding and climbing walls make no sounds...
  • Rearrange the Song: Besides the usual remixing/rearranging of music between Acts 1 and 2, and the various arrangements of the theme tune for the various powerups and Super Modes, the tune for Deep Sea Zone is redone for Azure Temple Zone. Also see Boss Remix above.
  • Secret Level: Aerial Garden Zone, Pipe Towers Zone, Spring Hill Zone, Azure Temple Zone, Black Hole Zone.
  • Shout-Out:
    • Word of God mentioned that it's not a coincidence Tidal Palace Zone bears more than a passing resemblance to Maridia.
    • One of the colors players can pick for their character (a tea green color) is named Zim.
    • A few of the devs are Touhou junkies, and the three ice-themed multiplayer stages all have subtle references to Cirno.
    • One of the multiplayer zones available in some versions was called "Zero Ring Zone", which had the words "All your rings are belong to us!" posted all over the arena and a Suspiciously Similar Song to the Genesis/MegaDrive cutscene sequence in that game. Due to design issues, it was cut late in the "Final Demo" release cycle.
    • In earlier versions, Mario Koopa Blast was an obvious Shout Out to the Super Mario Bros. series. A shout-out still exists in 2.1, as Pipe Towers Zone.
    • During the Final Boss fight in the old version 2.0, one strategy for attacking Metal Robotnik is to catch one of the missiles he launches and throw it back at him, in the same vein as the Metal Robotnik fight in Sonic the Hedgehog: The Movie.
  • Slippy-Slidey Ice World: Oddly averted in the Single Player game. The theme gets around in multiplayer, though: Frost Columns Zone, Icicle Falls Zone, Diamond Blizzard Zone...
  • Smashing Hallway Traps of Doom: Techno Hill Zone Act 2 and Egg Rock Zone. The beginning of pre-2.1 Techno Hill Act 2 had a particularly vicious set.
  • Sniper Rifle: The Rail Ring, a favorite weapon of many in the multiplayer community.
  • Sidetrack Bonus: As usual for Sonic, this game is loaded with extra rings, shields, 1-ups and emerald tokens for those willing to look.
  • The Spiny: Sharps are a conventional example, while Green Snappers are a bit different. Their tops are completely bare but are guarded by a ring of spikes that make spindashing useless.
  • Springs, Springs Everywhere: It's a Sonic game, what did you expect?
  • Stylistic Suck: Oh lawd the Sweet Bro and Hella Jeff mod.
  • Suicidal Overconfidence: Enemies that try to ram you will gladly run straight into a revving spindash, which generally kills (or at least hurts) them and leaves you unhurt. Beware enemies with spikes or a ranged attack, however.
  • Suspicious Video Game Generosity: As soon as you enter the Disco Room in ERZ2, you find two 1-Ups just sitting there in the corner. To say the least, you are about to need them.
  • This Is a Drill: The Minus badniks from Arid Canyon Zone are rocket-powered green balls with a pair of drill arms which they use to visibly burrow through the ground, jumping out to attack whatever technicolor critter treads above it.
  • Turns Red:
    • All of the bosses go into a panic phase (called a "pinch" phase on the wiki) when you've whittled them down to three hits left.
    • Sharps look cute and innocent enough, as well as slow and we- what's that sound? OH GOD AHHHH
    • Subverted by the Egg Guards. Destroying their shield causes them to change color to red and gain a speed boost, but without said shield, they are little more than a slightly faster Crawla.
  • 2½D: The Sonic Robo Blast 1 Remake levels.
  • Under the Sea:
    • Deep Sea Zone is your standard ''Sonic' water level, with the usual air bubble pockets that can refresh your air supply.
    • Azure Temple Zone, a new Hyper level in version 2.1, stretches your Oxygen Meter management to the max, because the entire level is submerged.
  • Underwater Ruins: Deep Sea Zone, Tidal Palace Zone, and Azure Temple Zone.
  • Unique Enemy:
    • As with Sonic 2 and 3, most enemies in the game only appear in one particular Zone.
    • Azure Temple Zone has an enemy seen nowhere else in the entire game; a bug that gives you air when you destroy it. Given the nature of the zone, that enemy's existence is necessary.
  • Video Game Demake: The game's mods include full demakes of Sonic Heroes and Sonic 2006.
  • Your Size May Vary: In older versions of the game before Egg Rock Zone 3 got redesigned, Metal Robotnik was much taller. In the current version, his appearance in Egg Rock Core is noticeably smaller.


Example of: