Best game sequels:

Heroes of Might and Magic 2

Mass Effect 2
Disciples 2
Knights of the Old Republic 2: The Sith Lords
The Witcher 2

Yes. This.

Megaman Zero 3

Resident Evil 2.
Project Gotham Racing 2
Doom II: Hell on Earth

what about soul reaver?

I can only think of Max Payne 2, seems like everything else has been a disappointment for me.

Baldur's Gate 2
Fallout 2
Heroes of Might and Magic 3

Heroes of Might&Magic 2

Chaos Strikes Back
Treasures of the Savage Frontier
Doom 2
Baldur's Gate 2

Off the top of my head these are some of my personal best sequels:

Max Payne 2
Resident Evil 4
Super Mario Galaxy 2
Super Mario Bros. 3
The Witcher 2
Batman: Arkham City
Red Steel 2
Street Fighter 2
Gears of War 2
Guilty Gear X
Soul Calibur 2
System Shock 2
Donkey Kong Country 2
Final Fantasy 6
Half-Life 2
Super Smash Bros. Melee
Rogue Squadron 2
Red Dead Redemption
Star Fox 64

Am I the only one who liked the first Witcher more?

No, but TW1 definitely has a far, far higher barrier to entry than the sequel because of the unorthodox combat system.

On the other hand I have TW2s combat system :D

1. Thief II
2. GTA San Andreas
3. Baludr's Gate 2
4. Gothic 2
5. Fallout 2

Monkey Island II
Diablo II

Silent Hill 2

Runners Up


2. Fallout 2


3. Metal Gear Solid 2


4. Street Fighter II


5. Marvel vs. Capcom 2