hey! if games based on exploration and shaping the setting are your type of thing, may i suggest subnautica? we've got an undertale cast with undyne, mettaton, napstablook and my narra-chara here! the pace is medium-slow and our ac's pretty lax: one post with at least ten comments or fifteen comments between two threads/proof of engagement with the setting.

there's plenty of chances to interact with the setting. chara here has been researching on ~the dream world~ and some of our characters have expanded the base, introduced social media memes to the network, and are just learning about a mysterious leviathan in the abyss just to name a few cool things. and ofc we'd love to play off a frisk!!!