1) Sharing with friends and family is allowed, and encouraged
2) Your e-mail is your registration key - when you try to activate on another computer, an activation link is sent to you via e-mail, and you can do this 10 times. After that, you've just got to ask Puppygames for more activations and they'll almost always approve them (I assume the main exception would be if someone was passing around a registration all over the Internet, which is pretty easy to notice if it happens).
3) If anything screws up re: the DRM system, it errs in your favor. In particular, if you haven't registered when you boot the game and you can't reach the server, it will assume that you're good to go, and turn the demo into the full game. It will never shut you down because it can't phone home.
4) The only way the full game gets disabled is if the server tells it that you've asked for a refund (which they always honor).
5) They're aware that 3) and 4) are very easy to game (block the Internet connection once you get your refund), and that's fine, they prefer not to hassle legit users unduly.
IMO, this strikes a pretty good balance - it tends to err on the side of the user while still throwing up a tiny barrier to piracy (pretty much just enough to thwart the casual pirate). To do more is not worth it, because people that will go through the trouble of bypassing the registration process on the demo would probably just find a cracked version anyways if it was any more difficult to do.
Also, I should mention that the demos that Puppygames provides are quite substantial chunks of the full versions - if you've played enough of the demo to reach its limits, then chances are you've been liking the game enough to warrant buying it. I think this is pretty important, it's probably the main reason they have so few refund requests.
Finally, I encourage everyone to check out the game itself at http://www.puppygames.net/revenge-of-the-titans, too - Cas and Chaz have always put together really polished and fun games, and it's a shame that they haven't been able to figure out how to sell more of them (Cas was not joking at all with the self-deprecating stuff about people not buying the games, they really are only selling a handful of copies every month). FWIW, I have no relation to either of them, I'm plugging them because I've always liked their games and would hate to see them give up.
1) Sharing with friends and family is allowed, and encouraged
2) Your e-mail is your registration key - when you try to activate on another computer, an activation link is sent to you via e-mail, and you can do this 10 times. After that, you've just got to ask Puppygames for more activations and they'll almost always approve them (I assume the main exception would be if someone was passing around a registration all over the Internet, which is pretty easy to notice if it happens).
3) If anything screws up re: the DRM system, it errs in your favor. In particular, if you haven't registered when you boot the game and you can't reach the server, it will assume that you're good to go, and turn the demo into the full game. It will never shut you down because it can't phone home.
4) The only way the full game gets disabled is if the server tells it that you've asked for a refund (which they always honor).
5) They're aware that 3) and 4) are very easy to game (block the Internet connection once you get your refund), and that's fine, they prefer not to hassle legit users unduly.
IMO, this strikes a pretty good balance - it tends to err on the side of the user while still throwing up a tiny barrier to piracy (pretty much just enough to thwart the casual pirate). To do more is not worth it, because people that will go through the trouble of bypassing the registration process on the demo would probably just find a cracked version anyways if it was any more difficult to do.
Also, I should mention that the demos that Puppygames provides are quite substantial chunks of the full versions - if you've played enough of the demo to reach its limits, then chances are you've been liking the game enough to warrant buying it. I think this is pretty important, it's probably the main reason they have so few refund requests.
Finally, I encourage everyone to check out the game itself at http://www.puppygames.net/revenge-of-the-titans, too - Cas and Chaz have always put together really polished and fun games, and it's a shame that they haven't been able to figure out how to sell more of them (Cas was not joking at all with the self-deprecating stuff about people not buying the games, they really are only selling a handful of copies every month). FWIW, I have no relation to either of them, I'm plugging them because I've always liked their games and would hate to see them give up.