Games that don't require internet connect to play...

[linthat22]

Ultima VII series

or

Commandos?

runners up: The Longest Journey, Return to Zork, and King's Quest collection

 

[thejunglegod]

Simcity 4

 

[Fire&Blood]

I recommend the game: Wife. I assume you've been playing that game for years, probably the graphics aren't as appealing as they used to be and you know it inside out and probably have enough of it as it is but considering the setting, you should try hard to immerse yourself in the moment.

Alternatively, Limbo.