Download a trusted PS1 emulator. For PC and Android, DuckStation or ePSXe are the gold standards.
If you own a legitimate copy of Tekken 3 (PS1 disc) and want a small file for your emulation library, here’s a safe, legal method: tekken 3 ps2 iso highly compressed
If you are running the full to play the Arcade History version of Tekken 3, you will need PCSX2. It is the premier PlayStation 2 emulator, offering robust controller support and excellent performance. Security Warning: Avoid Malware Traps Download a trusted PS1 emulator
If you are using a modded PS2 (e.g., with Free McBoot or OPL), you would still use a PS1 ISO file (.bin/.cue or converted to .VCD) rather than a PS2 ISO. here’s a safe