tadpole

You control the red ship.

Press V to rotate left.

Press B to rotate right.

Press N to move forward.

Turn Green circles to Yellow by bumping into them and speeding them up.

Turn Yellow circles to Green by blocking them and slowing them down.

The red square at screen top is the loop indicator.

At the beginning of the loop:

+10 points for Yellow circles with bar

-10 points for Yellow circles without bar