After a small amount of time some games go from a commercial license to another license - usually an open source one. Once games fall into the open source type of license then they usually get modified by the gaming community and made into better versions. These are then usually released on developers websites.
One game that has really been modified a lot and released - which I remember playing this game years ago and loved it - was Warzone 2100. I used to play it on PSX ("Playstation") and loved the game, then when I found out - via WikiPedia... [read more]