License: Public Domain

The least restrictive license, allowing anyone to do anything they wish with the product except own it (this includes modifying it and/or selling it for profit).

Unlike any other license, this one is (theoretically) irrevocable. Copyright holders retain the right to change the terms under which copies are allowed. Copyright holders can change GPL, BSD, or MIT, to proprietary, for examples. But declaring Public Domain is a final relinquishing of Copyright, no changing terms after that.

Parent group

Licenses

Child group

CauseWay DOS Extender

Games by year

The first License: Public Domain video game was released in 1979.

Washington Apple Pi, RufusPro Software and Coleco published most of these games.

Platforms

C128		39
Apple III		33
Linux		30
Apple II E		21
MS-DOS		15
Coleco Adam		14
Atari 400/800		12
Amiga		8
BeOS		8
Atari ST		5
Tandy Coco		4
Memotech MTX		3
BSD		3
Mac OS Classic		3
Windows		2
ColecoVision		2
NeXT		2
NES		1
Atari 5200		1
Unix		1
OS/2		1

Most common companies

Washington Apple Pi	31
RufusPro Software	11
Coleco	6
Nibbles & Bits	5
ANTIC	5
HC Software	4
Delaware Valley ADAM Users Group	3
Digital Psychosis	2