Popular and reliable choices include ePSXe and PCSX . These programs mimic the original console environment on your computer.
Since Tekken 3 was originally a PlayStation (PSX) title, modern PCs require an emulator to run the game files. tekken-3-game-free-download-direct-link
Tekken 3 : The Definitive Guide to Downloading and Playing a Classic Popular and reliable choices include ePSXe and PCSX