Project Hail Mary runs 156 minutes and is rated PG-13. At the Sunday recheck, Prime Video’s live listing showed it included with Prime or MGM+, with a $3.99 UHD rental and $19.99 purchase option. Amazon’s streaming guide confirms the film is on Prime Video worldwide. The subscription route is the obvious one if you already have Prime; the runtime makes this a deliberate Sunday-night commitment, not background viewing.