Free Lemmings-like puzzle game
http://pingus.seul.org/

Pingus is a free Lemmings-like puzzle game covered under the GNU GPL.
It features currently 77 playable levels.

You can use to see which languages are supported

    pingus --list-languages

And start with

    pingus --language de


If you wish to play the other levels

    pingus /usr/share/pingus/levels/playable/some-level
    pingus /usr/share/pingus/levels/incoming/some-level
    pingus /usr/share/pingus/levels/wip/some-level

The other, probably more userfriendly, way is to simply load them into
the level editor and then click the play button.