(From the original README)
Kobo Deluxe is a 3'rd person scrolling 2D shooter with a simple and
responsive control system - which you'll need to tackle the tons of
enemy ships that shoot at you, chase you, circle around you shooting,
or even launch other ships at you, while you're trying to destroy the
labyrinth shaped bases. There are 50 action packed levels with smoothly
increasing difficulty, and different combinations of enemies that
require different tactics to be dealt with successfully.
Kobo Deluxe has an improved graphics engine that delivers smoother ani-
mation, while keeping the game logic totally accurate and predictable
regardless of frame rate. It also adds sound effects, new graphics,
fullscreen mode, four extra skill levels with smoother gameplay and
various other features expected from a modern game. (There is still a
"Clasic" mode that plays exactly like the original XKobo.)
Kobo Deluxe uses SDL for sound, graphics and input, and builds and runs
on all major operating systems, as well as some more unusual platforms.
It can also use OpenGL for accelerated rendering, through glSDL.
In short, Kobo Deluxe is loads of classical arcade style fun for just
about any machine with graphics and sound!