Love at first sight...

[IBlackKiteI]

And, oddly, Call of Duty: Modern Warfare.

You do mean the first Modern Warfare right?

.....right!?

Anyway strangely I'd have to say Spore, loved controlling my little...umm spore during the cellular stage and was immediately hooked.

At least until I got a good chunk of the way through the space stage and never played it again.

 

[Paksenarrion]

Minecraft.

Minecraft. I haven't bought it yet, but I really want to play it, as soon as I have plenty of free time.

I bought it last week. It will seep into your brain and will be impossible to get out. It actually made me antsy in my university classes today, I kept hearing the sound that is made when I use a pick to break up stone and the "ploink" sound that collecting resources makes.

You know, I think we just solved a way for astronauts to pass the time on a trip to Mars.

 

[Rune342]

Tales of Vesperia, at first it seemed like a nice JRPG. After beating a boss about 30 hrs in and appearing to rap up the plot, I got an achievement telling me I was only a third of the way done. Oh the awesomeness that occurred throughout that game.

 

[blxtnsq]

Pretty much every Bioware game I've played, and for some reason I'm surprised every time I fall in love with them. You'd think I would've learned by now. Especially Mass Effect. I was already in love with the series by the time I got Mass Effect 2. If there was any game I could marry and live happily ever after with, it would be this.

I've just started playing Dark Messiah Might And Magic and I thought it would be some crappy spin-off, but I'm absolutely loving it! That probably has to do with the Source engine and the fact that you can kick people into spike-walls

 

[Sonic Doctor]

Minecraft.

Minecraft. I haven't bought it yet, but I really want to play it, as soon as I have plenty of free time.

I bought it last week. It will seep into your brain and will be impossible to get out. It actually made me antsy in my university classes today, I kept hearing the sound that is made when I use a pick to break up stone and the "ploink" sound that collecting resources makes.

You know, I think we just solved a way for astronauts to pass the time on a trip to Mars.

Yes, because hibernation would just be a waste of valuable time that could be used for mining for virtual resources and using them to build virtual castles, palaces, cities, and undersea labs, plus putting saddles on pigs and riding them.

 

[Paksenarrion]

Minecraft.

Minecraft. I haven't bought it yet, but I really want to play it, as soon as I have plenty of free time.

I bought it last week. It will seep into your brain and will be impossible to get out. It actually made me antsy in my university classes today, I kept hearing the sound that is made when I use a pick to break up stone and the "ploink" sound that collecting resources makes.

You know, I think we just solved a way for astronauts to pass the time on a trip to Mars.

Yes, because hibernation would just be a waste of valuable time that could be used for mining for virtual resources and using them to build virtual castles, palaces, cities, and undersea labs, plus putting saddles on pigs and riding them.

Indeed. With this, we assure the success of our species. Our blocky, virtual species.

 

[Squilookle]

Driver, Crimson Skies, The Saboteur, and Just Cause 2.

 

[C95J]

Fallout 3
Minecraft

Those are the only 2 games which I could play for hours on end without complaint.

 

[onewheeled]

DJ Hero. From the first song all the way to the final five stars on Expert difficulty, I was hooked, and loved every second of it. Such an amazing game, more people should play it! It comes free with DJ Hero 2 now!

Also, Team Fortress 2 for PC. After owning it for a year and a half on 360, it was an excellent experience the first time I booted it up with all the new maps, updates, weapons, ability to spray, more players, more game modes, everything.

 

[FalloutJack]

Some good answers I have have already been said, but let's add to the pot...

Persona games...and Extermination.

 

[Mermonster]

Mass Effect
Deus Ex
Oblivion
The Witcher (Enhanced Edition)
All on the PC.

I started playing these games with very low expectations, but was blown away after a couple of hours.

 

[Ascarus]

i can think of a few and it's usually games that bring something new and / or revolutionary to the field.

For example Doom, Diablo, WoW, Half-Life and the like.