0 A.D. (pronounced "zero ey-dee") is a cross-platform real-time strategy (RTS) game of ancient warfare. It's a historically-based war/economy game that allows players to relive or rewrite the history of ancient civilizations, each depicted at their peak of economic growth and military prowess.
Beat Back the Horde is a rhythm-time strategy game for Android 2.2 and up, focusing on fast-paced placing of units while tapping to the beat! Build up combos to spawn Über Units! It is playable in single-player mode, or in multi-player mode over Bluetooth, and can be learned in a minute and played for hours. It includes many achievements to unlock, five songs to master, adjustable difficulty single-player AI, and particle effects.
Tric-Tac-Toe is a new twist (or perhaps "tilt") on the classic Tic-Tac-Toe game. The board resembles a Rubik's Cube surface; three players each take turns filling up the surface of the board. Once the board is full, a winner is declared according to the point totals of each player. The "tric"ky part is the connections on the board that score points.