The BBQ

Spoiler: Hint: ball on wall

If you do nothing, it rolls off the level after being pushed. What in the level seems like a destination for it? But surely it can't get there, nothing can move such that it can, right.....?

Spoiler: Hint: inside ball

So what is it's purpose? Both R and B can already get almost anywhere. The path the ball enables must have a purpose.

Spoiler: It all falls together

There's a connection between the first two hints. The inside ball allows, quite indirectly, some stuff that relates to the ball on the wall.

Nice oven in the backyard It's somewhat sneaky, but not too hard since there aren't too many elements to consider.

Wow! Little bit hidden and sneaky but it has a very clever design, and as @richardfu_ said, at the end there aren't so many options to play with so you finally find the way. The final idea and its effect is gorgeous. Thanks!

First - the hints didn't help at all. Second - "A little bit hidden" - more like hidden.

Spoiler

Thanks to one of my levels, I know that balls weigh more than bots.

It was great when I seen the circle tap on the win. Thanks

@gmacpro I say 'a little bit' because all I want you to see is very visible. Only the inside ball is a bit hidden, because it's inside. The rest I want to be a surprise and therefore invisible. But judging from the response so far, it seems that as I hoped it could be found out, which is always difficult to predict as level maker.

I must be doing this the wrong way or missing some subtlety, because although i can win using presumably the designed solution with the spectacular finish, my success rate is only about 33%.

@ridgerunner

Spoiler

Do you block the ball, so it doesn't roll off from the level?

@Block builder ..yes

Spoiler

plus hercules move. Have won with B though looks as if R could win too.

@ridgerunner

Spoiler

The intended solution is to block the ball with B, and autopilot over it as it falls, to go down with the elevator.

Alternatively, as @chemi showed me, you can block it with R, requiring good timing with B pushing the ball.

The free block and ball should end up in the gutter, that never failed for me.

@Block builder ..ive been doing like @chemi , which will be why my success is low.

Interesting design. Surprising ending. But I restarted for the last move, not sure if I solved right, .....

For all I went through to make it, the BBQ didn't taste good.

Spoiler: Vs