A hundred games just joined the directory
recompiled.games
The latest update puts 115 games on the directory. A bunch of them open in the browser. The rest are native ports for a disc or ROM you already own. The game files themselves stay off this site.
Open one in the browser
If you want to click something tonight, start here. Half-Life 2, Portal, Grand Theft Auto: Vice City, Morrowind, Daggerfall, Daytona USA, Five Nights at Freddy's, Geometry Dash, Deltarune, Kingdom Hearts: Chain of Memories, the Doom 3 demo, Unreal Tournament, and Luigi's Picture Poker all have a browser build in this batch.
Fallout: Nevada is the browser listing we currently mark playable. The others are experimental: the build is far enough along to list, and it can still break. The play link leaves this site for the project's own page.
Or take a port to your PC
KeeperFX is the native project in this batch we list as playable. It is the open-source source port of Dungeon Keeper, and it expects a copy of the game you own. Dungeon Keeper 2 landed beside it, with Flame, OpenKeeper, and GLKeeper. Those three are still experimental.
The same update lists native work on Skate, Gears of War, Sonic Adventure 2: Battle, Eternal Darkness, MediEvil II, Virtua Fighter 3, Street Fighter Alpha 2, Dragon Age: Origins, Drakengard 3, God of War: Ascension, Prince of Persia: The Sands of Time, Burnout, SSX 3, Xenogears, and Vagrant Story. Read the project page before you block out an evening. Most of them still want the original disc.
Where to start
The full directory is already sorted with the newest games first. Browser ports and native PC ports split the same list if you already know which kind you want. When a project asks for a ROM or disc, that file comes from a copy you own.