>>11814602 (OP)Snake roy is neat
Railway is a decent pipe dream clone but only playable on an old LCD
Beast fighter has a hilarious intro and ending
Most games are clones of 1980s arcade games and vary in quality
BUT basically all of the Megaduck games are also available for game boy on various multicarts also made by Sachen, I think the one exception is the Tetris clone+Mahjong multicart (they seemed to only have been sold in Asia) and the one game made by the company which actually made the Megaduck (The brick wall)
The Megaduck was after all a hardware clone of the game boy, just changed enough so it wasn't directly compatible with gameboy games. There even were some gameboy games unofficially ported to it recently