I played the first Prototype when it first came out and although it had it's bonus', there were definitely a few things wrong with the game. They've worked on a lot of the problems the game had such as repetition, targeting and difficulty scaling. Although the game still repeats the same principles for most missions, what you're repeating is a lot of fun, so you probably won't mind it so much. I didn't get any lag spikes when playing Prototype 2 through, whereas the first game had a few issues.<br /><br />The Radnet edition allows access to a few extra bonus', such as additional challenges which award Evolution Points (used to upgrade your character) and leaderboards where you can compare how you did against your friends. I found myself often doing challenges over and over, just to beat my friends, so I think the Radnet edition is pretty worthwhile for that slight competitive edge. Also, the Radnet edition gave away Avatar awards such as P2 hoodies and P2 jackets, which your Xbox Avatar can use; little touches but I loved it! They're also adding a few more over the coming weeks, so I'm looking forward to getting involved with them.<br /><br />You don't need to have played the first game to play this one, as they have a quick recap of the first game so you can get stuck straight in. A definite must buy for people that like sandbox games and any 'god game', where your character gets stronger and stronger, almost unstoppable.