Sonic the Hedgehog 4 (not to be confused with the SEGA official episodic game) is a bootleg unlicensed video game for the SNES. It's a Game Mod of Speedy Gonzales: Los Gatos Bandidos.
This bootleg provides examples of:
- Continuity Cameo:
- Crossover: Indeed. Obviously, this is a crossover because both Sonic and Mario appear.
- Game-Breaking Bug: On some emulators, after four Zones, the SNES game freezes resulting in it being unbeatable.
- Game Mod: This game is actually a ROM hack for another game known as Los Gatos Banditos replacing Speedy Gonzales with Sonic.
- Platform Game: This game is a platformer, much like most games in the series it's based on.
- Unwinnable: On some emulators, after four Zones, the SNES game freezes resulting in it being unbeatable.
- A Winner Is You: The ending cutscene is just the game congratulating you and saying that Sonic and Mario are good friends.