Well in a lot of ways this demo actually is a mix of jev for simple stuff + a very intelligent harness to fill in the rest. Pay attention to the "jev counter" on when api calls actually happen and the kinds of decisions its making. Its very rarely in a tight loop, and when it is (eg in an item menu) it tends to randomly walk through options.

Its very cool, but the harness is doing a _ton_ of heavy lifting.