I'm intrigued - why would anyone play this except for the badges? 1/5 because there is no 0. Control reactiveness are bad, lag is terrible. Let's move on...
Horrendous game - completely agree with wadark - if controls were a little more user friendly, that may help - but certainly not worth your time. Go on to the next one!
Good idea... poor implementation. People have commented on the poor physics and the lack of fast-forward, but the most amazing thing for me may be the fact you can't move a point. You just have to erase all beams and start again. I'm a puzzle fan but 2/5 - and I feel generous.