This is a preliminary compatibility list for Gens/GS II.

NOTE: Only commercially-released games should be added to this list. A separate list may be created later for hacks, homebrew games, and/or bootlegs.

For each game, the following information should be listed:

• Game name, region, and CRC32. (Region may be JUE for region-free ROMs.)
• Save type, e.g. SRAM, FeRAM, or a type of EEPROM. (Use N/A for none.)
• Does the game work on Gens 2.14, Gens/GS r7, and the latest Gens/GS II? For Gens/GS II, a `git describe` tag should be included.
  • Any issues specific to an emulator should be listed in the emulator column.
• Any additional notes about the game.

Background colors for compatibility columns:

Description	Value
Game is playable with no major issues.	yes
Game is playable, but has problems.	partial
Game is unplayable and completely broken.	no

Mega Drive titles
Game	Region	CRC32	Save Type	Gens 2.14	Gens/GS r7	Gens/GS II	Notes
Aladdin	U		N/A	Works.	Works.	Not tested.	Some sound effects and percussion samples don't quite sound the same as they do on real hardware.
NBA Jam TE (Rev.00)			24C04	Crashes with black/blue bars.	Crashes with black/blue bars.	git: rewrite-EEPRom / 706866de	EEPROM must be emulated in order for the game to run. EEPROM code is buggy; use Rev.01.
NBA Jam TE (Rev.01)			24C04	Crashes with black/blue bars.	Crashes with black/blue bars.	git: rewrite-EEPRom / 706866de	EEPROM must be emulated in order for the game to run.
Scooby-Doo Mystery	JUE	7BB9DD9B	N/A	Bad sound.	Bad sound.	Bad sound.	Title screen has terrible audio. This occurs on all emulators using the Gens YM2612 core.
Sonic & Knuckles	JUE		N/A	Works.	Works.	Works.	None of the Gens-based emulators support S&K's mapper hardware. Instead, use precombined ROMs to simulate lock-on.
Sonic Crackers			N/A	Works.	Works.	Works.	Game should crash immediately after the SEGA screen, but it doesn't due to lack of "no-!DTACK" emulation.
Sonic the Hedgehog 3	J/U/E		FeRAM	Works.	Works.	Works.	Entering "debug mode" while standing on a Carnival Night barrel should crash, but it doesn't. The "Blue Sphere" sound effect is slightly off.
Virtua Racing			N/A	No SVP emulation.	No SVP emulation.	No SVP emulation.	Requires emulation of the Sega Virtua Processor in order to run.