Maybe a little biased...
... but the fact it is based much on luck really reduces the fun for me.
Other than that it was quite nicely done and very aesthetically pleasing, except the music which it was good that it could be turned off. Only problem was it doesn't stay amusing for very long, can get a bit boring quite quickly.
Too random
This could have been great fun and interesting if there was skill involved. As it is now, this game could just as well play itself without any input because completing or failing a level is just random. The easiest way I see of improving it would be to make levels optionally not randomize when you restart them, so you would have an option to try to knock that one nuclearoid that didn't blow up into a better position next time.
dat waz great
but at the end ... OMFG LAGG MUCH...!!!! AARRGGGHH
Screw you, It's random.
Levels appear to be randomly generated and luck is not fun.
Hmm
There is no skill involved, its just randomness. Not addicting but the music is cool.