Summer = Time to play games...but which one?

It is finnaly summer and that means two (or three depending on the school) months of free time. Like many of you i will spend my time playing games. Also like most of you i have limited amount of money and can buy only 1 game (omg not fair). I happened to look at a few promising games, but i cannot decide. Please tell me what game i should get that should last through the summer, oh and i already have gta so yeah =P.

Rainbow Six 2, Ninja Gaiden, Devil may Cry 4, Battlefield:Bad Company are some im considering, but open to other suggestions

All those combined wont last you all summer.

I plan on going back and playing some older games because i'm flat broke.

For example Divine Divinity and Beyond Divinity, and MUA again.

well, im still hooked on call of duty 4 (only because alot of my friends from school play it)... But the next big game seems to be Battlefield: BC so ill be picking it up soon.

out of those games i would choose DMC4 its a great game:)