Lauri, Frozenbyte Team Sorry it has taken so long! We are doing a major update to Trine 1 and the Linux version will be included in that version. The DRM-free Linux version was done by other team so we cannot use that one directly in Steam, or that would be quite difficult at least. We are hoping to release the Steam Linux version during this summer, but there may come some unexpected delays.

Article taken from GamingOnLinux.com.

Have you been missing playing the original Trine on Steam? Well the wait will be over this year as Trine is getting a major update with a new Linux port onto Steam.News comes from a GOL supporter & the developers, so thanks to both for confirming this!Trine is a fantasy action game where the player can create and use physics-based objects to beat hazardous puzzles and threatening enemies. Set in a world of great castles and strange machinery, three heroes are bound to a mysterious device called the Trine in a quest to save the kingdom from evil.You can grab the current version DRM free from the developers directly for $9.99.