Sonic Blast (G Sonic in Japan) is a 1996 Game Gear Sonic the Hedgehog game, and the second-last game Sega released for that system, preceding The Lost World: Jurassic Park. (As usual, it was also converted to the Master System for the Brazilian market.) The title allows the player to pick from Knuckles, with his signature gliding and climbing, or Sonic, who can double jump. An oddity of the game is the amount of rings one loses from a hit varies from 10 to 30 depending on the source of damage, as well as Dr. Robotnik (aka Dr. Eggman) only taking damage of he gets hit on the windshield of his Egg Mobile.
Being released near the end in the console's lifespan, the game experiments with pre-rendered graphics Donkey Kong Country style, with a limited success given the reduced horsepower behind the system. Sonic Blast is often seen as the worst of the 5 Sonic platformers on the Game Gear and Master System, with it's slow speed a common complaint (though the next year's Game.com version of Sonic Jam is even worse in that regard.)
The game can be found on Sonic Adventure DX and Sonic Mega Collection Plus, and as an unlockable demo on Sonic Gems Collection.
Not to be confused with Sonic 3D Blast (Sonic 3D: Flickies' Island) (although the two were marketed alongside each other). Nor Sonic Robo Blast 2. Nor Sonic Blast Man. Nor the NES hack Sonic 3D Blast 5.
- Absentee Actor: One of a handful of games in the franchise (not counting games that predate him) where Sonic's sidekick, Tails, is completely absent. (Justified in the west, where he is said in the manual for Tails Adventure to have gone his own way after the events of Sonic Triple Trouble.)
- Advancing Wall of Doom: At some parts of Silver Castle, spiked walls will chase after you.
- American Kirby Is Hardcore: Referenced in the western manual, which mentions Robotnik's mustache as depicted in the western-version box art of all games at the timenote .
- Bee Afraid: The Buzz Bomber-esque Badniks from Green Hill.
- Beneath the Earth: Red Volcano Zone Act 2 and 3.
- Bonus Stage: Act 1 and 2 of each world have one, with the first act stage giving you a 1-up for beating it, while Act 2s bonus stages will give you a Chaos Emerald for beating them.
- Boss-Only Level: As with the other Game Gear games, the third act of each Zone is a small platforming area and then a boss fight (this returns to the first game's MO by having Robotnik fights instead of his flunkies). The True Final Boss is a separate part of the game from the Silver Castle boss.
- Collapsing Lair: Silver Castle crashes into the ocean in the ending.
- Convection Schmonvection: Featured in Red Volcano.
- Double Jump: Sonic has one in this game.
- Eternal Engine:Silver Castle Zone, which from the outside is very similar to the Death Egg in appearance.
- Everything's Better with Monkeys: The Coconut Badniks from Green Hill.
- Green Hill Zone: The Trope Namer makes an appearance in this game, although it has little in common with the original level outside of a superficial resemblance. And it has shades of Palmtree Panic in it as well.
- Golden Ending: While both endings are identical, the real ending doesn't show Robotnik escaping from the Silver Castle.
- Hopping Machine: Robotnik's device in the third act of Red Volcano is this coming off the bottom of the screen.
- In-Name-Only: Aside from being a Sonic the Hedgehog game with 3D rendered graphics, Sonic Blast has nothing in common with Sonic 3D Blast on the Genesis, Saturn, and PC. However, as these games came out around the same time, they were marketed together in advertising, as if Sonic Blast was the handheld port, where the earlier Sonic Labyrinth had more in common with 3D Blast.
- Kaizo Trap: If you run out of air during Blue Marine's boss encounter, you have to fight it all over again, even if you're in the victory pose.
- Kill Sat: Silver Castle is presumably this, due to its similar appearance to the Death Egg.
- One Hundred Rings: Collecting 100 rings gets you a free one-up...but immediately resets your ring counter back to zero.
- Lethal Lava Land: Red Volcano Zone Act 1.
- Oxygenated Underwater Bubbles: In Blue Marine Zone.
- Quicksand Sucks: Featured in Yellow Desert Zone Act 2.
- Shifting Sand Land: Yellow Desert Zone Act 1.
- Sprite/Polygon Mix: Pre-rendered 3-D models for Sonic, Knuckles and the Badniks, but 2-D sprites for everything else.
- Temple of Doom: Yellow Desert Zone Acts 2 and 3.
- Tennis Boss: Silver Castle Zone.
- Theme Naming: Each of the five worlds is named after a color: Green Hill Zone, Yellow Desert Zone, Red Volcano Zone, Blue Marine Zone, and Silver Castle Zone.
- Timed Mission: Ten minutes for each act.
- True Final Boss: Depending on whether you have all the Emeralds or not by the time you beat Silver Castle's boss, you immediately confront the real final boss.
- Underwater Boss Battle: Blue Marine Zone. Extra air is only provided by the enemy striking the ground.
- Underwater Ruins: Blue Marine Zone.
- Villain: Exit, Stage Left!: Robotnik flees Silver Castle when it crashes into the ocean in the Bad Ending, but doesn't in the Good Ending.
- Visual Pun: The true final boss is, of all things, a cracked egg.