B-ug

I worried that i was missing something obvious, but i didn’t find an easy gameplay for the lower star.

Lower Star was not easy. Nice demo!

I don't really use moveable B, and I got the lower star by luck really, I tried to use strategy but it doesn't work at all, then suddenly at several times tries later I got it cuz the bot flying... (Actually a backflip by force)

I won two ways--once with the backflip that @OyaOya mentioned, and the other time with a bot stack, but I don't know how I got the bots to stack and I couldn't repeat it.

I, like other players, did not know how to take the lower star correctly. That's why I had to think and experiment for a long time. But then I got great pleasure from finding the right and STABLE way:
@ridgerunner @MekaSage @OyaOya

Spoiler: VS

I agree with other players that the level is 4. But I will give it 5 because:
1) I like mini levels with a "twist"
2) 2 yellow bots - this indicates that the author spent more time on building than it seems
3) despite the mini level, I spent a lot of time! And in the end I enjoyed it
4) cool design
5) There is a stable way to win!

There is only one piece of advice - it would be better if the real B helped the second bot on top too! This will lengthen the gameplay a little and make it a little more interesting.

Thank you