Most Immersive Game you Experienced

[Iseeyou]

Morrowind
FF7-8

[Mongoose19]

Planescape Torment - best RPG of all Times.

[Zeljo]

Mass Effect series
Deus Ex: Human Revolution
God Of War series
Witcher series
MGS 3
Hotline Miami

[ponth]

Skyrim and oblivion were both good. I'm currently playing dead space 3 and getting quite immersed, especially with surround sound and having actual mice foraging my shelves, adding very realistic sound effects..(don't ask.) Also, Unreal and Doom3 had me on the edge of my seat, although that was ages ago.