A brilliant concept let down a little by some glitchy "paradox" effects (where the mere presence at the portal of the "newest" bot seems to change history).
4.99999999999999999999999999/5
Nice.
Some complaints:
The difficulty can ramp up a bit quick (and seemingly dependent on how well you are doing, so you can score better on a bad game!)
At about level 15 I was sent a 65 and a 70 simultaneously which between them require a minimum of 46 clicks, I don't believe there is time to do this -- things really shouldn't be impossible.
I felt some of my keystokes were being thrown away (and particularly a fast 2--then-3, which often appeared as just a 2), not sure if the way you poll the keyboard isn't a touch flakey.