KSP is a fun little free rocket simulator in which you can design, build and fly your own rocket or design whatever you want.
As of 0.18.4, Kerbal Space Program has a native linux release
For more details and user comments, view the versions of this application
|Version||Description||Rating||Wine version||Test results||Comments|
|0.13.x||Kerbal Space Program is a lightweight alternative to Orbiter, where you can build and launch rockets, fly to orbit and land on the moon.||Platinum||1.4-rc5||1||0|
|0.17.x||Released September 2012 - adds new planets and moons, some new parts and new UI stuff. For more details, please see the official announcement at kerbalspaceprogram.com||Platinum||1.5.13||3||4|
|0.18.x||Released November 2012 - Adds docking, solar panels, more planets and moons, and art redesigns.||Gold||1.5.23||4||1|
|0.8.x||Still an alpha version but seems to work well, more parts can be obtained from the KSP community.||Bronze||1.3.24||3||0|