Web site: sourceforge.net/projects/garden/
Category: Games
Sub-Category: Arcade
Platform: Linux, BSD, Unix-like, Windows
License: GNU GPL
Interface: GUI
Wikipedia:
First release: 2008
Garden of Coloured Lights – an old school multiplatform 2D vertical shoot-em-up with some innovative elements. Innovative graphics, soundtrack and game concept.
It is free, open source software. It is released under GNU GPL license v3 which means that it is not only free of charge, but you may also download the source code and play with it.
Garden of coloured lights depends only on Allegro game programming library, a multiplatform game programming library. Thanks to that, you can play Garden of coloured lights on Linux, Windows as well as on other systems that have allegro installed.
It is not an easy game, so you will need some skill and patience. And maybe you will appreciate the possibility to use a joystick.