Free Abandonware Games on myabandonware.com
Lucas Meadows stashed this in Old School Gaming
Sweet abandonware games from the 80s and 90s, such as:
- Oregon Trail
- Doom I & II
- Sid Meier's Civiliation 1
- Wolfenstein 3D
- Where in the World is Carmen Sandiego?
Many of them are DOS games, but you can easily download DOSBox for your platform (the Mac OSX one worked for me right out of the box!).
Download the zip files for the game(s) you want, and put them in a directory with a name with 6 or fewer characters like "games" (remember it's DOS, so my super badass games becomes my sup~1).
Unzip your game/ROM into your games directory. Then type:
mount c ~ c: cd path/to/games/dir # look for a .exe file in the directory. if it's called foogame.exe, then you would type: foogame
And the game should start!