I decided to make a quick experiment, before I go on writing the sprite library and writing proper games for this. I wrote a version of the "pew" library (needed for the games written for #PewPew FeatherWing) for this device, simulating the 8x8 display with rectangles.

At least the snake game works, didn't try the others yet. I'm redrawing the whole screen every frame, so the frame rate is not terrific, but it's playable.