Steam is offering a 25% discount on the physics platform/puzzle game Trine for one week, bringing its normal price of $29.99 to $22.99. Sale ends on August 19th. To mark the occasion, there's a new gameplay trailer available that shows off the spectacular physics based platforming and puzzle solving that players can pull off. The Trine demo can be downloaded here.

Download the HD Trine Trailer #4 (MB)
Download the Trine Demo (460 MB)
Check out all Trine downloads
Read the Trine Review