The X collection of games from the famous developer Egosoft are now available in a Humble Bundle packages that is also available for the Linux platform.
In all fairness, not all the game in the X universe are available for the Linux platform, but three out of five is not a bad bundle. The EGOSOFT collection is composed from X: Beyond the Frontier, X-Tension, X2: The Threat, X3: Reunion, X3: Terran Conflict, and X3: Albion Prelude.
Only the latest games in the series have arrived on Steam for Linux, and this means that whoever buys the Egosoft Humble Bundle will also get the Linux versions for X3: Reunion, X3: Terran Conflict, and X3: Albion Prelude.
The promotion will last for another five days and all the games can be redeemed on Steam. Check the Humble Bundle website
for more details about these games.