This is a perfect example of a simple idea that is executed well. Obviously it's a bit short and lacks variety but I won't knock you for that in a jam. The concept is utilized well in the three levels (I think there's only three) and nothing felt broken or confusing. The most impressive thing you did was you were able to communicate the idea and goal of the game without any sort of tutorial. It was clearly indicated that moving one character also moved the other because you start with the camera facing the green capsule. The goal is clearly indicated by the color green and I had no trouble identifying it right away. Good job with this! :D