There are a variety of web sites that catalogue old games—the MakeUseOf link catalogues a number of them—but RemainInPlay takes a unique angle. Rather than include any free games from the past, they only archive games that were once commercial products and released again as freeware.
What this means is that instead of playing games that weren’t all that great when they were released free, you’ll find games worth playing in their heyday. Quake III Arena, see here in the screenshot, cost $US50 when it was initially released, and remained extremely popular for years after. Now you can grab a copy for free. The archives at RemainInPlay dip back well into the 1980s to help you enjoy a little retro-DOS gaming fun.
Have a great source for games—retro or otherwise—to share? Let’s hear about it in the comments.