Been playing an early leaked copy. It’s quite good. The summoning mechanic is much deeper than I thought it would be.
Items respond to eachother. If you send a Fire Slime onto grass blades, they catch on fire. If you put a bouyant object on water it will float.
If you out a rock on that bouyant object, it will sink. It’s pretty next level.
Nintendo DS emulation. That’s about the one novelty use case.