When you install TM2 on the other computer, don't click on "create a new account", but click on "I have an account" and use the login/password you enter to connect on TM2. You don't need to buy it another time to install it on other computers ;) But you can't play on both pc at ...

Ok, 2 days ago I bought and downloaded the TM2 beta canyon with paypal for my pc(my desktop) and installed it just fine, but now when I try to install it on other pc(my laptop) it says that the key is invalid or already used, so I guess that I can only install the game once, what if I need to re-ins...