For those who don't yet know, Ark II will be on Gamepass on Day 1

Based on when they were added, these MIGHT leave gamepass in January. For those who want more than 2 weeks notice : r/xboxone

Will Ark 2 be free on Game Pass?

All confirmed Xbox games coming to Game Pass in 2023 and beyond

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Ark 2 FAQ - What You Should Know And Why You Should Be Excited? - MMO Wiki

Nvidia Bundles 3 Months of PC Game Pass With GeForce Now Ultimate Subscription

All Game Pass games announced at the Xbox Showcase 2023

It's obvs not out yet but if anybody wants to install ASA on Xbox so it's fully updated before they decide to purchase it, you can pre-install from the Xbox app now

Coming Soon to Xbox Game Pass: Contrast, CrossfireX, Ark: Ultimate Survivor Edition, and More - Xbox Wire

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FINALLY : r/ARK

ARK 2 will remain on Xbox Game Pass for at least 3 yrs upon its release. Ark 1 will stay in the service forever. : r/ARK

Ark 2 agreement reveals how long it will stay in Xbox Game Pass