Haven’t done one of these in a while… I’m still waiting for Zandronum’s first stable release. But I decided to whip this up last night, and it turned out pretty good. Right now it’ll run with the final version of Skulltag, so Zandronum compatibility shouldn’t be a problem.
About: A simple new game mode with one level. Run around the square room collecting dot orbs. For each orb you collect, a new projectile will randomly spawn and continually bounce around the room, along with the next dot orb. Get five orbs to refill your health, and then six more, then seven more from that amount, and so on. There is no end to the game, simply play until you die, and compete with high scores. (There is nothing stopping you from playing in deathmatch or coop, I suppose. But this is intended for single player.)
Compatibility: Skulltag(/Zandronum). It also seems to work in ZDoom. Doom II.