Giving away LIMBO, Amnesia, Sword & Sworcery, and Psychonauts

I am new and I'm not able to post any more giveaway due to limit, so if this is legal then i am willing to give away LIMBO, Amnesia, Sword & Sworcery, and Psychonauts in one Steam key.

I will give the key to the first person who correctly guesses a number that I chose between 0 and 100, inclusive. Let the game begin!

edit: after some thinking I thought a close date is needed.. 5/21 1:00pm PST

edit2: we have a winner. the answer was 34, thanks for entering everybody. i will post more gifts very soon