What are the best pc games under 4 GB (Installers)?

Here's some games that I have personal experience with..................

Action :

Doom 3

Quake 3 & 4

Unreal Tourmanent GOTY edition

Halo 1 & 2

Gears of War 1

Call of Duty 1 & 2

Medal of Honor 1 & 2

Half Life 1 & 2

System Shock 1 & 2

Postal 1 & 2 (controversial & not for the faint hearted)

Manhunt 1 & 2 (controversial & not for the faint hearted)

Far Cry

GTA 3 & Vice City

Mafia 1

Overlord 1 & 2

Splinter Cell Upto Chaos Theory

No One Lives Forever 1 & 2

Project IGI 1 & 2

Hitman 1,2 & 3

Serious Sam TFE,TSE,2

Racing :

Need For Speed Upto Most Wanted

Juiced 1 & 2

Strategy :

Civilization 1-3

Age of Empires 1-3

Warcraft 1-3

Heroes of Might & Magic 1-5

Disciples 2

Total War Rome

Cossacks 2

Commandos 1 & 2

Desperados

Role Playing Games

SWKOTOR 1 & 2

Deus Ex 1 & 2

Sacred

Diablo 2

Elder Scrolls 3 Morrowind

Final Fantasy 5-7

Fable The Lost Chapters

Fighting :

Mortal Kombat 1-4

Virtua Fighter 2

Simulation :

The Sims

SimCity

Roller Coaster Tycoon

Black & White 1 & 2

Sports :

Fifa upto 2007

Winning Eleven Soccer 8 & 9

Pro Evolution Soccer 2010-2012

NHL Upto 2009