Subcategories:
Downloads 
Freeware arcade style space shooter game.
http://www.sci-fi-game.com/
2. Asteroid ES
Freeware arcade style space shooter game for the PC.
http://www.scifi-game.com/
3. Epoch Star
A space RPG / scifi adventure game for the PC.
http://www.epochstar.com/
4. Free Games
Search and download totally free games, with screenshots, no registration.
http://free-games-free.com/
5. Free Games
Offers downloads of adventure, arcade, action, fight, wall breaker, logic, sport, strategy games
http://www.onlyfreegames.net/
Offers more than 200 free games for download in many different genres, including action, adventure, RPG and strategy games.
http://www.free-games-fun.com/
7. Fun 3D Games
Offers fun games for download. All games are hand selected and reviewed by editors.
http://www.fun3dgames.com/
Popular game downloads, organized by genre: puzzle, arcade, Mahjong, action, jigsaw, cards, board, and word.
http://www.naturalgames.com/
9. Old PC Games
Classic old PC games abandonware downloads. In Polish.
Stare gry abandonwae download na OPCG.net.
Stare gry abandonwae download na OPCG.net.
http://www.opcg.net/