I know some people don't like to play favorites, but I was just wondering what people though was the best game GOG has to offer. I'm thinking Psychonauts. (although I am biased. it's my favorite game of all time)

Best would be Die by the Sword, simply because of its replayability. Even though i bought it a year ago, I still like to pop in and hack a couple of limbs every now and then. It's just pure entertainment.

I gotta go with the MM Six Pack - Whole lotta gaming in there.

Gothic is my favourite thus far. What a gem.

Wasn't there a thread about this before? About the best 5.99 game anyway.
I would have to say Duke Nukem 3D and Arx Fatalis.
EDIT: Oh, and Beyond Good and Evil! Such a gem. The perfect game for all Zelda-like game fans.

Evil Genius. Seriously. I played it more than Bioshock 2, and that was 60 bucks :|

I'm a bus commuter, so games that I can play on a laptop for 20-30 minutes are perfect for passing the time. The game that has had me totally hooked for these short term gaming sessions is Pro Pinball: Big Race USA. It's an absolutely brilliant pinball simulation. The physics are spot on, the game is easy to pick up and play, but the depth to the pinball rule system is pretty substantial, so you can really work towards some high scores.
But, for a game to sit down and play for longer periods of time, then I would have to agree with Psychonauts. It's such a creative game.

For me it is Heros of Might and magic 3 . Lot of replayability.

Okay, my GOG top 5 would look like this:
1. Definitely Heroes 3. You could get 100 hours out of playing through the campaigns that come with the complete release on GOG alone. And then you can start worrying about multiplayer, as well as all the great custom scenarios and campaigns that are still out there, and still being made to this day.
2. Duke Nukem 3D. Cult classic. Infinitely replayable. Moddable. Has third-party extensions that add true 3D models, mouselook, and hi-res textures. Multiplayer still works. Awesome.
3. Psychonauts. Breathlessly creative, endlessly fun.
4. Gothic II Gold. Despite the harsh learning curve, once you get into the game for real you're hooked. Another 100+ hours of gameplay lie waiting for you trying to tackle this one and it's included expansion.
5. Gabriel Knight: Sins of the Fathers. One of the finest adventure games ever made.

For me it would have to be one of:
Evil Genius
Fallout Tactics (it's the best Fallout game by far)
Ghost Master
The action games and rpgs available are decent, but not as good as any of those three.

*Fenixp makes a little step towards WingedKagouti. Fenixp makes another little step towards WingedKagouti. Fenixp screams: "Get hiiiim!" and jumps on WingedKagouti.
You must really hate RPGs, don't you? :D

*checks Fenixp's stats to see whether he picked the "Bloody Mess" perk...*

Beneath a Steel Sky
...cause it's free... :p

Naturally, there is no best GOG, any more than there is a best game ever. But my favourites include: Earth 2150, Sanitarium, UT 2004 and The Longest Journey.

Original war
Arcanum
Psychonauts
Jagged Alliance
Giants
HOMAM 2