It has good mechanics and is entertaining. If I could improve one thing, it would be the level design, very large maps can disorient the player

Enjoyed it quite a bit! Had some issues at the start with Dr Laserjump not changing size when he ought to be, but they went away after the first few levels and then it worked perfectly from there!

The builder is also really cool and impressive! Bonus points for the persistent .ini heh

Good smooth scrolling and the controls are responsive. The graphics are clear and I appreciated the instructions. Its kinda hard to land on the platforms accurately. I Keep missing or overshooting. 

Awesome game, but on one level (level 5  or 6)  I got stuck (on part where you enlarge yourself and then drop down) multiple times.

very nice concept, the builder is super cool :)

The controls felt very good and the camera movement was smooth as well. It's good for a short enjoyable experience. Kudos :)