Definite Immersive Sim :
1999 - Thief Gold
2000 - Thief II : The Metal Age
2000 - Deus Ex
2002 - Arx Fatalis
2003 - Deus Ex : Invisible War
2004 - Thief : The Deadly Shadows
2004 - Vampire The Masquerade : Bloodlines
2006 - Dark Messiah Of Might And Magic
2011 - Dishonored
2011 - E.Ψ.Ǝ: Divine Cybermancy
2011 - Deus Ex : Human Revolution
2014 - Deus Ex : The Fall
2016 - Deus Ex : Mankind Divided
2016 - Dishonored 2
2017 - Dishonored : Death Of The Crusader
2017 - Prey

Semi Immersive Sim (incl. Open World) :
1999 - System Shock 2
2002 - The Elder Scrolls III : Morrowind
2005 - Pathologic
2007 - Far Cry 2
2007 - Bioshock
2007 - The Elder Scrolls : Oblivion
2007 - S.T.A.L.K.E.R. : Shadow Of Chernobyl
2008 - S.T.A.L.K.E.R. : Clear Sky
2008 - Fallout 3
2009 - S.T.A.L.K.E.R. : Call Of Prypiat
2010 - Fallout : New Vegas
2010 - Bioshock 2
2011 - The Elder Scrolls V : Skyrim
2013 - Bioshock Infinite
2014 - Alien : Isolation
2015 - Fallout 4
2014 - Thief
2017 - The Long Dark
2018 - Kingdom Come : Deliverance
2018 - Fallout 76
2018 - Underworld Ascendant
2019 - Pathologic 2
2021 - Death Loop
2021 - Cyberpunk 2077
2021 - Cruelty Squad
2023 - Atomic Heart
2023 - Voidtrain
2023 - System Shock Remake
2023 - Shadows Of Doubt

Classic (Underworld-Like) Immersive Sim :
1992 - Ultima Underworld : The Stygian Abyss
1994 - System Shock
1996 - The Elder Scrolls : Daggerfall
2001 - Wizardry 8
2017 - Vaporum
2018 - Delver
2019 - Void Bastards
2020 - Vaporum : Lockdown

Indie Retro-Style Immersive Sim :
!!!!!!!!!(12\10) Fortune Run!!!!!!!!!!!
Gloomwood
Felcher
Brigand : Oaxaca
Consortium
Blood West

Mods :
Thief 2X: Shadows of the Metal Age (Thief II)
Thievery UT (UT99)
The Dark Mod (Doom 3)
The Nameless Mod (Deus Ex)