If you hurry up, you can get the Prototype pack for $7.50 @ Amazon.
There are two versions, Steam and mixed.
Steam is Prototype 1 & 2 + DLC.
Mixed is Prototype 2 + DLC on steam, and Prototype 1 NOT on steam.
The price will go up in about 1-2 hours to $9.99 after this.
Well, if you look at the steam forums for P2 http://forums.steampowered.com/forum...357&p=32004189
, it seems to be a really, really crappy port, and if you manage to not have it crash then you should run out and buy a lottery ticket.
It seems to have issues with memory leaks, core count, and other things.
What is worse, is the developer is now dead, so no fixes it seems.
Is it worth ~$4 a game to try ? You make the call.