For those who want to skip downloads entirely, some community projects like 3Tekken.com allow you to play directly in a web browser. Mobile Options for Android
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
Many available downloads are actually "Pro Guides" or walkthroughs that provide tips, move lists, and strategies for mastering characters. For those who want to skip downloads entirely,
Tekken 3 : The Definitive Guide to Downloading and Playing a Classic tekken-3-game-free-download-direct-link