The SCND Genesis: Legends is a free game based on my webcomic THE SCND GENESIS. The battle system is a hybrid of turn based RPG's and conventional 2D Fighters. The game has a hand drawn comic book graphical style and has other anime style effects.
It was first published as an alpha in 2011 and its fist stable release was published in early 2012. The game is no longer in active development but it still receives a decent number of downloads (10,000+ ltd).
It is licensed under the GPL3 and uses plain old Java2D for rendering. It will work on practically any machine with the JVM installed. I’m currently working on its commercial sequel “The SCND Genesis: Legacy”. It’s available on the Softpedia, Sourceforge, Indiedb, moddb, Java-Apps and the Ubuntu Software Center (for $2.99).