The "why is the first game not in the collection?" thread.
Here you can ask the question a lot of people will ask/have asked.
To avoid the question being asked a number of times and the unavoidable thread, here's the official thread. Have fun!
"Why is the first Hitman-game (Codename 47) not in the collection?"
Hitman: Codename 47 is full of glitches, aggrevating bad controls and overall feels like a dry-run for Hitman 2: SA.
To make this game into a playable "HD" game, they have to remake the whole game. Which costs a lot more money than upgrading a game to "HD".
Plus, the best missions from C47 have already been remade in Contracts.
So there you go.