Yes, the idea is to be a shared world that can be used in other games. Especially for games that just need some outdoor terrain, it could be easier to find a place of the right shape to set your game in than to hire environment artists to design terrain and then spend the money to store it all on-chain for verifiability.

Of course, I'm already thinking of cool game ideas to build on top of it, so if nobody else bites, at least I'll have something to work with.