This is the number 1 source to download TI-Nspire cx ii cas games:
http://www.ticalc.org/pub/nspire/lua/games/
Our favorite TI-Nspire cx games are 2048, chess, tetris, minecraft and snake.
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If you learn about the famous Candy Crush game for the TI-Nspire send us an email!
These sites also have plenty of TI-Nspire apps and games to download : https://www.tinspirecx.com/ti-nspire-games-programs/
and
https://www.ticalc.org/pub/nspire/lua/games/
How to Install Games on your Ti-Nspire CX – Tutorial :