Commercial games released as freeware are games that, in their original license, were not considered freeware, but were re-released at a later date with a freeware license, sometimes as publicity for a forthcoming sequel or compilation release.
Fish Fillets (1998) is a puzzle game by Altar Games which was released under the GPL in 2002. Subsequently the Fish Fillets NG project has recoded the engine to enable multi-platform release.
Flight of the Amazon Queen (1995) is an adventure game by Interactive Binary Illusions, released to support the ScummVM Project.
The following formerly paid games have been made available for free download as freeware, but may only be downloaded from certain websites and with the explicit permission of the copyright owner. As such, they are not freely redistributable software.
Psychonauts (2005) is a critically acclaimed, quirky action game published by Ubisoft, and available on the service GameTap as a free game until December 2008.
The following are commercial games that were rereleased as freeware but are not freely redistributable software. They were only available as freeware as a download from their owners' website for a limited time, but could not be redistributed. As the owners are no longer offering them to be downloaded, and may not be selling them either, there may be no legal way to get them. See details at Liberated Games.
Caesar (1993) is a city-building game by Sierra.[1]
Far Cry (2004), first-person shooter computer game developed by Crytek. Ubisoft had released the game as ad-supported freeware on FilePlanet, but the promotion ended within four days.
Rayman Raving Rabbids (2006), is a video game in the popular Rayman series, developed by Ubisoft Montpellier. Ubisoft had released the PC version of the game as ad-supported freeware on FilePlanet, but the promotion ended within four days.
Liberated Games — A site which features games which have been freed (liberated) by its copyright owners, in some form.
Remain In Play — Features commercial games that have been released as freeware by their copyright owners.
World of Spectrum — Large archive of legal ZX Spectrum downloads, with various permissions including some from Spectrum hardware copyright holder Amstrad.
FilePlanet — Some of the games featured on this list are available on this website. It also has many other initially free games/demos not listed here.