But I was thinking of all the (+- 1000 or so) games) I own, really what would be the last I'd give up and would like to keep on forever.
Not necessarily the best game, or the rarest, or whatever, also counting in flair, packaging, emotional relation with it, etc.
But, what would be the 1 game I'd keep till I die (dramatizing drumroll)? ie my most valued game possession...
no, it's not a shmup.
In fact I'd sell all my shmups if necessary,but will never consider giving this one up.
It's the 1 game that ALWAYS makes me feel well, happy and to these days: young.
Penguin Adventure.

So what's yours?
Just the 1 game you'd NEVER sell.
(reasons why are appreciated!)