1 - Games that are third party usually stay around a year.
2 - 15 days
3 - No, you cannot play it if it leaves Game Pass. You get a 20% discount if you buy a game that is on Game Pass, though.
I'm pretty new to it but I think games like RDR2 left after about a year. Obviously, first party games and presumably anything from the EA Play library will be there permanently.
They announce a game is leaving like a couple weeks beforehand. Apparently you get like a 20% discount if you decide to purchase it digitally though.
For all games there is a minimum of 3 months a game needs to stay in gamepass. After that it all depends on what kind of deal they made.
Thanks for all the info ☺️ Anyone know when monster hunter world was added? That's the most substantial third party game on there that I want to get to.