Petris is yet another Tetris clone.
Petris is a (long overdue) basic implementation of Tetris. Provided for demonstration purposes only. The game is Free Software, and all the artwork are under GPL compatible creative-commons licenses.
The game contains two components: an engine that holds all the game logic. And a front end built with out-of-the box LCL components. So it will be quite easy to build another front end (e.g. with SDL) and keep using the same engine.
The game/GUI (not the engine) reguires Lazarus 1.8.0 (or higher).
The sources for Petris can be downloaded from https://github.com/eny-fpc/petris.