SlackBuildsOrg/games/naev

Naev is a 2D space trading and combat game, taking inspiration from the
Escape Velocity series, among others.

You pilot a space ship from a top-down perspective, and are more
or less free to do what you want. As the genre name implies, you're
able to trade and engage in combat at will. Beyond that, there's an
ever-growing number of storyline missions, equipment, and ships;
Even the galaxy itself grows larger with each release. For the
literarily-inclined, there are large amounts of lore accompanying
everything from planets to equipment.

The ndata download (included in the info file) is required to
play. This is a very large file (305M as of 0.7.0) so metered
connections beware.

As of 0.7.0, naev is also available through Steam.