2x0ng (pronounced “two-zong”) is a procedurally generated puzzle combat roguelike game in an 8-bit retro style. In the year 2B7F, the Xiomacs virus escaped its interpreter and began to attack the System. Defend the system by moving your guy and throwing a colored ball. The ball picks up the color of any brick it breaks. The dashed lines (“gates”) can only be broken by a ball of the same color. On each increasingly-difficult algorithmically-generated level, your goal is to reach the purple exit square thingy by unlocking the colored gates while avoiding and destroying an onslaught of enemies. The rest of the rules are for you to discover in-game.
2x0ng is also free software, licensed under the GPLv3 (with media files under CC-BY-SA).