Robotnik's Revenge is a ROM hack of Sonic the Hedgehog 2 by Colinc10. Instead of replacing the levels from the original game, it instead takes the final level and extends it greatly, adding all 17 bosses from Sonic 1 and 2 into one giant boss run.
There are two modes in the game: Time Attack, which gives Sonic infinite lives, has rings within the level, and gives you a grade based on your time, and Survival, which gives Sonic 3 lives, no rings, and simply sees how long you can hold out. Players can also choose between Sonic and Tails, though the difference is minimal.
The game was very well-received at the Sonic Hacking Contest, and even had a trophy named after it.
This game provides examples of:
- Antagonist Title: Referring to Robotnik/Eggman, who is the primary opponent fought in this hack.
- Boss Game: While there are a few short platforming segments between boss fights, most of the time the player is going to be fighting bosses.
- Boss Rush: The game takes place in a vastly expanded Death Egg Zone featuring all of the bosses from Sonic the Hedgehog and Sonic the Hedgehog 2
- End-Game Results Screen: At the end of Time Attack mode, the game gives you a letter grade based on your time.
- Marathon Level: The entire game is one long level with 17 bosses.
- No Plot? No Problem!: The only indication of any plot happening is in the game's title, with Sonic 2's ending cutscene being replaced with an End-Game Results Screen.
- One-Hit-Point Wonder: Sonic is made this in Survival mode, since there are no rings.
