To play the game, the emulator needs the game data, commonly known as a ROM. Many browser emulator sites come pre-loaded with popular titles, meaning you don't have to hunt for the file yourself. You simply click the game, wait for the emulator to load (usually just a few seconds), and hit play.
Click "Load Game" or "Start." The browser will temporarily cache the PlayStation ROM data into your browser memory. ---- Tekken 3 Emulator Unblocked