Dos Games
Dos Games
Verify the copyright status of the games. If they're in the public domain, you're allowed to download them freely. Otherwise, they're safeguarded by copyright regulations.
I connected to legal resources such as demos, freeware, and shareware collections that were shared openly with magazines. However, it seems these links are no longer available for ourceforge due to potential copyright issues.
Abandonia is an excellent location for finding abandoned games. You might also check GOG, though it won't be free.