Some more of my beloved are
Relentless Twinsen's Adventure
Rise Of The Triad
Cyberstorm- closest thing to Battletech on the pc since Ralph Reed's strategy version MechForce for the Amiga500
Steel Panthers
Panzer General
Alpha Centauri
Unreal
Borderlands- looking forward to the sequel
Bulletstorm
Serious Sam 3- very underappreciated
Heavy Gear 2
Mechwarrior
Iron Assault
Mech Commander
Slave Zero
Shogo
Xcom
Postal- especially the first one
Crysis 2
Quake series- especially the first one
Doom series- and its cool independent addons like Final Doom and TnT
Herectic
Hexen
Soldier Of Fortune
Warlords Battlecry III
Carmageddon
Painkiller series
Tropico 2
Sim City series
Fear
Unreal Tournament series
Supreme Commander 1+2
Half Life series
Wolfenstein series
Sins Of A Solar Empire Trinity
Master Of Orion 2
Utopia- sort of like Sim City in space with combat
Age Of Mythology
Age Of Empires
Command And Conquer series- except for the last one
Machivelli Merchant Prince
Frontlines- sci-fi strategy wargame. Think there were one or two other modern combat games with similar titles.
Warhammer 40k Final Liberation
Warhammer 40k Chaos Gate
Stronghold
Majesty 2
Empire
East Front
Warcraft- the first one with its vast armies and more pleasing visuals
Disciples 2 Dark Prophecy
Wings for the Amiga500
The Haunted Hells Reach
Moto Racer
Need For Speed
Blood Money for the Amiga500
Shadow Of The Beast for the Amiga500
Stormlord for the Amiga500
Aminios for the Amiga500
Alien Breed for the Amiga500
Gods for the Amiga500