hooah, fact is that the activation limits tend to scare people off from buying the game or cause them to pirate it in retaliation to the activation limit. Normally in the gaming community, activation limits are seen as treating the customer as a presumed pirate, which is a very bad idea, especially if you want to keep business from the mainstream. While I don't see the hardcore deciding not to get it, it will probably scare off a lot of people who are only just starting out simming. If you absolutely must have some kind of activation required, here's an idea, use steam. If you use steam as a copy protection method, then you can have it so the cd key is used to activate the game, and you have to play it while logged in to steam, or in offline mode, which would require you to have logged in to steam with that key active on your account previously to play it anyway. Furthermore, steam would allow the player, if the disc breaks (its happened to me twice on a game, and i bought the dang collectors edition too) then the player can redownload it off the steam servers. It may cost a bit more to put it on steam, but remember that also you will be getting knowledge of it out there to people who otherwise aren't looking for this kind of game, they will be like "oh whats this" and they may buy it because they are interested, when they wouldn't have known about it otherwise. Finally remember that that individual cd key would be linked to that steam account, and you can't activate the key on a 2nd account, so that would help reduce piracy too, by preventing keygens from being used as much. All in all, your best bet IMHO for keeping your product secure is actually steam. Also remember this, we can get steam to run on linux, but we have to crack a game with tage, starforce, or securom copy protection to get it to run on linux. The reason for that is the cd check doesn't recognise the linux kernel, and won't work with it, where steam has been able to load on linux. That would actually give another benefit because then you are opening it up to the linux community too if the guys over at wine can figure out how to emulate windows properly to run DCS on linux with WINE.