Well I'm sure at least someone here has heard about it now but I've been playing a game called Minecraft for a couple months and it's addictive as hell. It's like Lego's for nerds, you just mine resources and build shit. It looks like a 16-bit game except it's first person.
There is no actual objective you just craft tools, shovels and pickaxes , and start exploring the MASSIVE randomly generated world before you eventually start building a castle or house or digging deep underground to where the real good stuff is. Something about it man, I can't only play it for 30 minutes, I play for like 3 hours at a time and I used to play longer when I started. The idea is to build a small shelter and craft torches so you can work indoors/underground with light before nightfall when the nasty shit comes out to kill you and then just expand your little creation outwards. Eventually you get the resources to make weapons and armor of course.
It's a recommendation that is only for certain people but there is a rapidly growing fanbase, infact the teenager who started the game has made enough money to start his own software company and the game is still in Alpha. If you like exploration or building massive shit with very few limits you might want to check it out. Online there are some really crazy things people have made.
I built myself a huge fortress that is built into a mountain (actually the whole mountain IS a fortress at this point) complete giant towers, huge lava falls and a maze-like labyrinth that goes deep under the surface (where I do most of my resource collection when I need). Seriously, Bowser would be proud. It's mah fortress ov doom.
HOLY FUCK
[ame]http://www.youtube.com/watch?v=kn2-d5a3r94&feature=related[/ame]