Admittedly I did need a guide at times for Quern too; I think the best compromise is what Cyan did for Firmament and just include an optional hint system in the game itself. By avoiding the need to consult walkthroughs, not only would excessive spoilers be avoided, but the experience would remain self-contained, something especially important for a VR game.
I’d hardly count something like a simple Solitaire clone app that could be otherwise played for free as a full game release… In terms of actual games, I’d much rather support mobile ports that can be bought for a one time price tag than those that are locked behind a subscription in perpetuity.