Log message:
Import opentyrian-2.1 as wip/opentyrian.

OpenTyrian is an open-source port of the DOS game Tyrian.

Tyrian is an arcade-style vertical scrolling shooter.  The story is set
in 20,031 where you play as Trent Hawkins, a skilled fighter-pilot employed
to fight MicroSol and save the galaxy.

Tyrian features a story mode, one- and two-player arcade modes, and networked
multiplayer.

This is the game engine - the data files are not included.