One of the upcoming free PlayStation Plus games for September 2026 is yet another open world co-op game for fans to enjoy. Every month, a batch of free games are given away through the Essential tier of PlayStation Plus. Unlike the games added to the Extra and Premium tiers of PlayStation Plus, the titles on the Essential tier can theoretically be kept forever. As long as one stays subscribed to PS Plus, they retain access to any of the games they've claimed through the service.