I was wondering whether it is possible to play American games for the PS1/2 on a European PS2?

Since I was going to bid for a game on eBay, from American. But I won’t bother if it is not going to work.

Obviously not. Remember the difference between PAL and NTSC systems. You’ll probably need to get your PS2 fitted with something along the lines of a Messiah chip if you want US games workable.

i play American Games on my German PS1, but not on my PS2. A friend of mine customized my PS1, have to ask him to do it again with the PS2.