So that tweet I linked to yesterday where the kid had gotten his TI graphing calculator to run OS 7 by overclocking it sent me down a rabbit hole.
Apparently these TI calculators have enough ass in the processing department that you can do some pretty groovy stuff with them. Via a page dedicated to programming the TI-Nspire, I came across someone who'd done a port of the original Quake to run on the graphing calculators.
Dude, when that came out I had a Compaq Deskpro 2000 5120 (that's the Pentium 120 pizza box desktop) and I had to add RAM and upgrade my video card to get it to run.