Xye is a puzzle game in which the objective is to get all the gems in each level. The mission is not as easy as it sounds: there are traps, monsters, and very hard puzzles everywhere. The player can interact with objects in the game in a lot of ways, and some of the objects can also interact with other objects.
Bastet ("bastard tetris") is an ncurses Tetris clone which is harder than every other tetris released. It is based on a heuristics engine which tries to detect which block you need or don't need, and then gives you the blocks that you don't need. For instance, if you usually play by leaving long "canyons" one square wide and then waiting for the long "I" block, you'll have to wait till eternity before you see it. The heuristics have been worked on for some time and are quite nasty.
Frozen Bubble is a game in which you throw colorful bubbles and build groups to destroy the bubbles. In one-player mode, you must destroy all the bubbles to access the next level. In multi-player modes, the goal is to have your opponent die before you. Local one-player and two-player modes are supported, and networked play is supported for modes ranging from two to five players.
Tombs of the Asciiroth is a puzzle/RPG/roguelike game you can either play in a Web browser or as an Adobe AIR application (available for Mac, Windows, and Linux). It is simple to play compared to most roguelikes, but the provided scenario should allow for some in depth game play. A map editor also exists to create new scenarios.
Deep Voyage is a collapse-style game in an underwater setting. The base mechanics are extended with many bonuses, anti-bonuses, and powerups. The game also includes a jigsaw mini-game and partially-interactive animated backgrounds which can be turned into screensaver mode when paused. During the game, the player helps a beautiful mermaid to win the royal garden design competition in Underwater Kingdom. So there is also a garden-building mini-game.