the test drive is public but the rest of the game is locked-- this IS a locked/invite-only game but I am very happy to spread out to more friends and friends-of-friends!
as a basic summary, Altar is a world-hopping/world restoration game with individualized objectives so players can help nudge their characters in the directions they want/Craft Their Own Character Development
I believe the infopages are still outdated about this so: there's a new gamewide challenge every month and newly-emerging setting details to play with every two weeks, or So Is The Plan