The game appears to be buggy at low frame rates, letting the invaders “push down” multiple rows at a time.
To reproduce: I had Firefox open and running five instances of Youtube in the background. That wasn’t how I produced it the first time(I had some other 100%-cpu Flash thingy locking down one core) but when I went to confirm that it was framerate spiking, that did the trick.
i had a question on this one, it gives an error say it does not correspond to the file path, i was wondering if all the .java on making the game should be on a specific folder or i need to get the url to use that line of code