Tower of Fantasy

Tower of Fantasy lands here specifically because it handles co-op better than the more famous anime open-world games in this space. Joint Operations — co-op dungeons that form a core gameplay loop — are available within a few hours of starting, and crucially, you can play story content in co-op with friends rather than being locked into solo progression. That distinction matters a lot for groups who want to experience the game together rather than occasionally intersect. The gacha monetization is real and follows the same pull-rate model you've seen elsewhere; weapons and characters are the primary spend targets. Population is more modest than the top half of this list, which affects matchmaking outside of a premade group. But for anime ARPG fans who specifically want to co-op through the experience rather than alongside it, this earns its placement.

Tower of Fantasy delivers a fast, anime-style open world with slick movement—climbing, gliding, and jetpacks make exploration feel free. It deserves a spot for traversal that invites wandering and for keeping core regions open to all players. Regular updates and events help the world feel busy. The catch is gacha monetization, which can pressure gear acquisition even though roaming remains open. Best for anime fans who love movement-driven exploration and can manage a gacha economy. It lands lower on the list due to monetization concerns, not its world design or sense of discovery.