Spherical testing is a puzzle based mod for portal 2 where you control spheres to complete puzzles. Including singleplayer, coop and vs game modes.
Again its been longer that it should have been since the last update, but this may well be the final one before I start to release things. Coop maps will be released first, hopefuly in early august, then nearer the end of august the same maps will be released in single player mod form, and on the steam workshop as maps. Unfortunately playing coop maps require a bit of effort to setup so you can play them.
Currently, all maps have been detailed and are just being polished.