Freeverse continues its week of product releases and game give-aways with the release of Burning Monkey Solitaire 4.

The series of solitaire games for Mac users includes: Freecell, Klondike, Pyramid and over thirty additional variants. The twist is the pack features joke-telling apes, singing gorillas and other merry primates.

Otherwise, the software offers a new OpenGL engine, support for widescreen monitors, animated card effects and native support for both PowerPC and Intel Macs.

Freeverse president Ian Lynch Smith said: "Harnessing the speed and graphics power of the Mac to play solitaire is what Freeverse has always been about".

Burning Monkey Solitaire 4 costs $24.95 and is a free upgrade for registered owners. A demo version is available.