Liquid War is a unique multiplayer wargame. Its rules are truely original and have been invented by Thomas Colcombet. You control an army of liquid and have to try and eat your opponents. A single player mode is available, but the game is definitely designed to be multiplayer, and has network support.

Angband is a free, single-player dungeon exploration game where you take the role of an adventurer, exploring a deep dungeon, fighting monsters, and acquiring the best weaponry you can, in preparation for a final battle with Morgoth, the Lord of Darkness.