I dunno if it is on GOG but get morrowind, it's so low spec my microwave can run it. Easy 300 hour time sink, more if you want to play good cop then bad bad cop.
Fallout 1 and 2 are on there, no clue what there like but it's fallout, how bad can they be?
Also, total annihilation. It's an RTS game that lets you create a silly amount of units. Very fun, even for non RTS lovers, it is the very definition of build lots o' shit and throw it at the enemy!
Another also, TF2. It's free, how can you argue with a constantly updated (like every 5 mins!) free game?
Fallout 1 and 2 are on there, no clue what there like but it's fallout, how bad can they be?
Also, total annihilation. It's an RTS game that lets you create a silly amount of units. Very fun, even for non RTS lovers, it is the very definition of build lots o' shit and throw it at the enemy!
Another also, TF2. It's free, how can you argue with a constantly updated (like every 5 mins!) free game?