Let me play vader immortal
Vader immortal is currently restricted to the quest. There is no reason to not put it on the rift other than to force people to buy the quest.
Good news: Vader Immortal: Episode 1 released for Rift S and Rift on June 20, 2019. Check it out!
Its coming the 20th of june.
James Sullivan commented
Vader Immortal should be available on all devices as stated many times by Oculus but now its only available on quest and no other of your invested devices