First game you remember playing more than an hour of

Half Life

Contra

Ballerburg

super mario brothers 1. we got an nes for xmas one year... it was the best year. except our tv had this crappy plastic frame around it holding the glass in, and it covered the edges of the screen so you couldnt see where the pits were... you just had to KNOW!

Sonic the Hedgehog.

Legend of Zelda (NES)

I'm not sure. I think Pokemon Yellow/Blue/Red. On PC the games, that came with Win95 and the Disney Hercules game (i still own it, its awesome^^).

Combat, the game that came packed with the 2600 console.
http://www.mobygames.com/game/atari-2600/combat-

jazz jackrabbit 2 anyone?

Age of Empire 2, Spent weeks on that awesome game.

Probably Wizard of Wor, back in C64 times, can't really remember though what was The first, not even on PC.

Ace of Aces on C64 .. and much more hours with:
Giana Sisters on Amiga 500 ! :-)

..or wait, was Hanse for C64 out earlier ?

I'm pretty sure it was either Pokemon Red or Link's Awakening. On the pc.. Age of Empires.

Pokemon, more of 200h

Super Mario Bros on my first console (Super-NES) :)

Probably Teenage Mutant Ninja Turtles on C64.

some game on the old atari

Circus charlie on NES (do anyone remember this game?)

omg .. on my atari 2600 .. i think it could be this kind of tennis ... or racing game. have been 32 games on one cassette (!) xD

http://www.amazon.de/32-Game-Cartridge-Atari-2600/dp/B001M0JWT2

btw: thx for making me feel real old now

It's gotta be ToeJam & Earl. First game I played for 3 hours straight, then got a mouthful from my ma.
Little did she know, it'll be the first of many.

The first game was probably one of the pokemon games on gameboy. Can't remember which though.
First steam game was portal 2. Played the hell out of that game!

The first Zoo tycoon on PC. Ahh, the nostalgia of locking up the visitors in the park and then releasing the lions from their enclosures.

Sonic the Hedgehog on SEGA Genesis

Either Beauty and the Beast: Be Our Guest or Lemmings. Don't remember which one, was too long ago and I was very young.

Megaman x2 I think