Flatland is a simple little game based on the 1884 novel of the same name. There are other RPG adaptations of the setting, but this was made just for /tg/.
The PCs and NPCs are all two-dimensional shapes (circles, triangles, etc.). There are four attributes:
- Brains (you roll this for thinking skill checks)
- Angle (the sharpness of your angle, for attacking other shapes)
- Charisma (your ability to sway other shapes' opinions)
- Durability (your resistance to being punctured by sharp shapes)
You can get it here.