Fastforward Software has released
Galder, a puzzle game for Mac OS X. It costs $19.99 to register, and a playable demo is available for download.
Galder puts users on a circular game board that you can control with the mouse and keyboard. You must match identical stones to get the highest score. Galder features multiplayer head-to-head network play and a global high score ladder. You can save games and return to them later if you wish, as well.
Galder is compatible with Mac OS X v10.3.9 or later. 256MB RAM is recommended, and 32MB VRAM is recommended.