here's what romlister spits out:
this is dual8way, dual4way and dual2way, no clones.
(don't blame me for inaccuracies, this was what mame+controls is tell me)
Angel Kids (Japan)
Assault
Battle Zone (set 1)
Black Widow
Bullet (FD1094 317-0041)
Cloak & Dagger (rev 5)
Complex X
Crazy Climber (US)
Crazy Climber 2 (Japan)
Draco
Dribbling
Face Off (Japan)
Fire Trap (US)
Front Line
Hat Trick
Hyperdrive
Indoor Soccer
Inferno
Joyful Road (Japan)
Karate Champ (US)
Knightmare (prototype)
Krull
Libble Rabble
Lost Tomb (easy)
Mars
Minefield
Off the Wall (Sente)
QB-3 (prototype)
Rescue
Rescue Raider
Robotron (Solid Blue label)
Rock Climber
Sarge
Screw Loose (prototype)
SDI - Strategic Defense Initiative (Europe, System 16A, FD1089B 317-0027)
Sente Diagnostic Cartridge
Sheriff
Smash T.V. (rev 8.00)
Snake Pit
Space Dungeon
Splat!
Star Guards
Stompin'
Tank 8 (set 1)
The Return of Ishtar
The Tin Star (set 1)
Title Fight (World)
Toggle (prototype)
Total Carnage (rev LA1 03/10/92)
Trivial Pursuit (All Star Sports Edition)
Trivial Pursuit (Baby Boomer Edition)
Trivial Pursuit (Genus I) (set 1)
Trivial Pursuit (Genus I) (set 2)
Trivial Pursuit (Genus II)
Trivial Pursuit (Spanish Edition)
Trivial Pursuit (Young Players Edition)
Ultra Tank
Vindicators (rev 5)
Vindicators Part II (rev 3)
Wacko
Water Match (315-5064)
Wild Western (set 1)