A beta version of Portal, the popular puzzle-platform game, is now available on Steam for Linux.
Valve released Steam on Linux in Februrary this year and have now released a beta version of Portal on the OS.
"This beta release indicates that it's very likely that the rest of the Half Life and Portal series may be coming to Linux in the not so distant future," Ubuntu, the Linux-based computer OS, reports.
For previous owners of the game on Steam for Mac or PC, the game can be claimed for free. First-time buyers can purchase the game from the Linux Steam store for £6.99.
Portal 2 is currently under the "all games" section in the Linux Steam Store but is greyed out, according to Gearburn.
It has also been suggested that Half Life and Portal movies could be in the pipeline during a keynote address at the DICE Summit earlier this year. The talk saw Valve co-founder and President, Gabe Newell, and Bad Robot production studio head, J. J. Abrams announce the two would be working together on games and movies.
Rumours also bubbled to the surface in February that 30 staff at Valve had been laid off.