Tekken 6 2 Player Mode

btw can you please post the settings you used?have you tried tekken tag 2 as well?

Yes that Cheat Engine . I did find the code that tells the game which character I picked, I tried changing it to someone else and it put my picker on that character but didn't affect anything else so stuck for now, maybe I will do something easy like money codes instead.

You should be able to play it straight away with the default settings. I mean to be honest there aren't a lot of settings available.
I have uploaded the settings I used anyway.

Here are the health codes too for Cheat Engine.
Attach Cheat Engine to RPCS3 and then add this address in manually:
(P1) 100AA1120 (P2) 100AA1D50
Starts at 46080 for Full Health, Enter 40080 to instantly KO your player. You can browse the memory region if you want to more specific hp control but these codes should be enough for normal users.

Hopefully you might be able to get some cool codes going and if you do please let me know!

P.S. No I have not tried Tekken Tag but apparently the Tekken Tag 2 prologue works so I would imagine TT2 should work too if 6 does....