Apunami: As the title says, what's that one game you're willing to play till the rest of your life? In short, it's just a variation of that old "What's your favourite game?" Question. I would love to know what games you guys love and would play till your death. Any genre, any platform, any game that you might have played in any point of your life. Feel free to share your memories with the game in your comments, I would love to read those. And lastly happy gaming! Love ya all :-).
Star Wars Roleplay (D6, not D20 or FFG).
Computer games get stale, and I already played those of infinite replayability to death, and while I'll play them some more yet I wouldn't be able to stick to one for the rest of my life. On the other hand roleplay never gets old so long as your group is even slightly decent, it falls apart when said group breaks up because someone kicked the bucket, had to move far away, got drowned in work and so on...
Other roleplaying games like Ars Magica, Dark Heresy or Fantasy Roleplay, Legend of the Five Rings, Shadowrun, World of Darkness or D&D are fine as well, I'm not that picky, but offhand Star Wars came first to mind.