I have Tekken Tag and Tekken 5 (havn't played it cause my ps2 got that gay disk read error crap), I like Tekken and the DOA series.
the only Tekken games i haven't played r Tekken 1, Tekken Advance, and Tekken 5: Dark Resurrection EDDY GORDO.....WINS!!!!!!!!!
If it doesnt want to read your games try opening up the PS2 and clean the laser lens because they are probably dirty and it should read them normally if you do if not then it more than likely something major....