Other 2 trackball games:
Rampart (3 trackballs)
Cabal (not the bootleg, though)
Quick list of game drivers that mame emulates with 2 or more trackballs (in no order):
- marble
- cabal
- rampart (3)
- teedoff
- gridiron
- tehkanwc
- syvalion
- rambo3a
- sdi
- mjleague
- krzybowl
- poundfor
- lemmings
- gtg2
- gtg2t
- stratab
- shufshot
- combasct
- bsktball
- bladestl
- bladstle
- gghost
- spiker
- ataxx
- abaseb
- soccer (4)
- atarifb
- atarifb4 (4)
- ebases
- arcadecl
*note: the names were cut and pasted from the driver .c files, so the names might not match the ROM names, and could include non-working games.
Also, there are many more games with 2 dials (spinners) that the trackballs can simulate, if you want.