hi I been playing a lot of old side scroller games for a while now and came across some opensource and free ones for PC. anyway thought I share them OpenSonic is a clone of Sonic the HedgeHog pretty fun game. get it here, http://opensnc.sourceforge.net/home/index.php The person has also made his own game a little like sonic called Surge it's looks pretty good I only played a few levels tho. Get it here http://opensnc.sourceforge.net/forum/viewtopic.php?id=438 Commander Keen: Invasion of the Vorticons This is also a opensource version of keen I bet some of you old guys remmber this one Get it here. http://clonekeen.sourceforge.net/ Alien Carnage found this the other week seems an ok game well since it's now free you can;t really moan note Windows Vista, Win7 will need DosBox for this I tested with Dosbox on Vista and works fine. Get it here http://www.3drealms.com/carnage/ Well that's it if I find anymore I add them. if you know of a free side scroller also add it here.