If you click on any of the underlined text below colored red or purple, the link the text will lead you to will open in a new window.
Android
Classic Mac (some software is for 68k Macs, some software is for PowerPC Macs (some 68k software might also work to some degree on PowerPC Macs))
iOS
N-Gage (all but N-Gage 2.0 are for the Nokia phone brand, not Nokia's video game service)
TI-82, TI-83 (Plus) and TI-84 (Plus) calculators (some games might also be compatible or incompatible with other/certain models)
CalcG (all games downloadable from that website are sorted into genres)
ostermiller.org (all games have source code and an explanation)
TI-Basic Developer (all games have source code and an explanation)
ticalc.org (all games downloadable from that website are sorted into genres)
TI-Nspire