How quick are you? How smart are you?

We're proud to introduce this fantastic brain-teaser to the doof collection. It's a test of reflex, grace under pressure and clear-thinking.

It couldn't be any simpler, Kubes fall into view, and you need to count how many are in view. Take into account ones out of view and underneath other ones. The quicker you submit your answer, the quicker you can proceed to the next level.

If you're stuck, you could go for a guess, but bear in mind that you'll lose points for every incorrect submission!