Downloading Games on a Calculator? Only Programmable Models (TI-84, Casio fx) via PC Transfer

Standard calculators (TI-84, Casio fx, HP) cannot download games from the internet.

What's Possible

• Pre-loaded / transferable: Some TI-84 Plus CE / Nspire CX II allow transferring .8xp / .tns files from PC via USB (TI Connect CE software). Games: Tetris, Snake, Mario, Portal, Doom (ported).
• Programming on-device: Write BASIC / Python / Lua / C programs directly on calc.
• Casio fx-CG50 / fx-9860G: Add-ins (.g3a) via USB (FA-124 software).

Not Possible

• Basic scientific calculators (no programmability, no USB).
• Direct web download on the calculator itself.

Resources

• ticalc.org — TI programs/games.
• Cemetech — community, tutorials.
• Planet-Casio — Casio add-ins.

For real gaming: phone, Switch, Steam Deck, PC.