testing on a4000 060 with zz9000 the game is duplicated vertically
you found the 2 player split screen mode :) More seriously the zz9000 is probably at fault here. Any other games (including my remakes) in that case?
ill go through them
tested on pistormlite no secret 2 player mode found
great! There is an alternate 2 player mode that works too. Game is almost complete.
testing on a4000 060 with zz9000 the game is duplicated vertically