Many sites offering "30 MB highly compressed" full games are known for providing files bundled with malware or unwanted software rather than actual game data. How to Actually Play Tekken 5 on PC
A fan-made fighting game engine (MUGEN) or a heavily modified (which is much smaller) renamed to “Tekken 5.” tekken 5 for pc highly compressed just 30 mb better
If you are looking to play Tekken 5 on your computer, the only safe method is to use a legitimate PS2 disc with an emulator, which will require several gigabytes of space. Many sites offering "30 MB highly compressed" full