Gens/GS II Compatibility List

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.

NOTE 2: If a ROM isn't starting (black or red screen), make sure auto-fix checksum is disabled. (For gens-sdl, specify "--no-auto-fix-checksum".) If disabling auto-fix checksum fixes the ROM, then that ROM has a non-standard checksum, and a quirk should be added.

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
Aaahh!!! Real Monsters	USA				Works.	Works.
Advanced Busterhawk Gley Lancer	J					Works.
Adventures of Batman & Robin, The				Works.	Works.	git: master / 46471e41	DMA issue; CRAM DMA wraps around when it shouldn't. As a workaround, ignore CRAM DMA over 0x80.
Aero the Acro-Bat	USA				Works.	Works.
Aero the Acro-Bat 2	USA				Works.	Works.
After Burner	E, USA				Works.	Works.
Air Buster	USA					Works.
Aladdin	U		N/A	Works.	Works.	Works.	Some sound effects and percussion samples don't quite sound the same as they do on real hardware.
Alien Soldier	J				works	git: bugfix/2016-03-28.fix-compatibility / 1a0971d2	Uses a non-standard checksum. Region code in header is wrong.
Alien Storm	USA				works	git: bugfix/2016-03-28.fix-compatibility / 1a0971d2
Animaniacs	USA					Works.
Another World	E				Works.	The top of the image is damaged.
B.O.B.	USA					Works.
Back to the Future Part III	USA					Gens/GS II does not currently support this VDP mode. Mode Bits: 01000 VDP Mode:4 (SMS/GG)
Ballz	USA					works
Barkley Shut Up and Jam!	USA					almost: problem with controls ans seems to run too fast.
Battletoads	USA				Works	git: bugfix/2016-03-28.fix-compatibility / 1a0971d2
Bubba 'N' Stix	USA				Works.	git: bugfix/2016-03-28.fix-compatibility / 79890616
Cadash	USA				Works.	bugfix/2016-03-28.fix-compatibility / f79a830b
Hurricanes	Europe				Works.	No sound.
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.
Vectorman 2	USA				Works.	git: bugfix/vectorman-2-lv1-crash-no-emulation / cf706d47	Regression caused by the introduction of NO-EMU builds partially broke DMA. This game seems to have been the only casualty.
Virtua Racing			N/A	No SVP emulation.	No SVP emulation.	No SVP emulation.	Requires emulation of the Sega Virtua Processor in order to run.