I have only TSF, downloaded somewhere, and 1.20 somehow came with my computer, but I patched it to 1.23, so now I have 1.20, 1.23 and TSF. I played in 1.20 when I was little, (offline) and I finished the game - passed all levels. When I get internet, I started to play 1.20 online, and somehow 1.23 players came in 1.20 with colorful name (JazzED), then I asked them what it is, and such as that... After that they told me where to download patch for 1.23 (on J2o) and I patched it. After that I downloaded TSF somewhere. I am not sure if my games are legal, but who cares