To unlock the tiny dinosaur Gon, beat him in Tekken Ball mode or achieve a high score in Survival Mode and enter "GON" as your name.
While the file is essential for emulation, it is important to remember that downloading copyrighted ROMs or ISOs from the internet is often a legal gray area or outright prohibited depending on your region. The most ethical and legal way to obtain a .bin file of Tekken 3 is to "dump" the data from a physical copy you already own using a PC disc drive. Conclusion Tekken 3.bin