The Trap Tower

Simple and I liked the design.

This is great! I've only played a bit of it so far so will try to finish it later. Only I noticed that if you lift the 3-block bar at one point the red zappers walk onto it! Then they can get pushed off the level by the moving blocks as they go up the stairs! A good way to get rid of them. Then B is able to go inside the bottom floor of the tower!

Spoiler: screenshots

I finished the level, nice and simple design. I would query one slider though, as the red bot gets the star so you don't need to use the slider. It's this bit here:

Spoiler: screenshot

Welcome to the forum. What @Chris Hester said - I also didn't use the slider. I got it on the first attempt (I didn't even see the Z bots after the first part, luckily B got down before they went back). Thanks @YzakeLz