this is so cool: it's playable (even though super boring since there are no enemies) and you can feel that a few iterations would make it very usable.

Which model is the best at the moment, for this kind of stuff, in your experience?

I'd say Fable 5: https://senko.net/vibecode-bench/2026/rts-fable-5.html

It even has enemies! (I'm not too mad about it not following my instructions because it can be fun to play :) And I generated that from Claude Code on my phone.

Sonnet 5 also produced a pretty nice version. You can see all of them here: https://senko.net/vibecode-bench/