(commercial) Minecraft is a sandbox construction indie video game where you can build anything imagineable. It is also about blocks and collecting. The game is inspired by Infiniminer, a block-based digging/building game, Dungeon Keeper and Dwarf Fortress. Read more hot
CloneRNX is a simple puzzle game.
Dominoes on Acid
Superficially, Dominoes on Acid is a solitaire variant of Dominoes with weird colorful tiles. But on a deeper level it is a GUI for natural deduction. Every completed domino is equivalent to a proof of a tautology in classical propositional logic.
LetterMeister is an addictive word puzzle game originally released for iPhone/iPad.
Peces is a program to play the traditional Tangram, a game of Chinese origin.
Sudokuki is a graphical Sudoku game. It solves even the most difficult sudoku grids for you. It can generate a sudoku, play sudoku, and print a sudoku.
The Terasology project was born from a Minecraft-inspired tech demo and is becoming a stable platform for various types of gameplay settings in a voxel world.