I suggest Flight Gear flight simulator. Any modern computer should be able to run it, it is not as graphics intensive as you might think, just need OpenGL. Great game, fun to play and also teaches the physics of flight and world geography. My kids and I love it! You can find pre-built Debian packages at http://packages.debian.org/sid/flightgear they should install just fine on Ubuntu.

Quote from Photo #3 comment: "Release valves designed to let leaking gas escape could not let it out fast enough to prevent the damage." I hope that money not only goes to repairs but also to beef up the safety net. I'll be really pissed if we destroy our planet over budget concerns.