breakout clones, unlike snake games, haven't been done to death and so points for that upfront. your physics are right, the controls were fine for me. only critique i have is that the levels take too long to complete, i feel like this game would be better if the playing field was smaller or if the blocks were bigger (and fewer) in each level. also the powerups seemed to be too infrequent. i agree it would be cool to see some other powerups.
took me a minute to figure it out... the instructions would benefit from a rewrite that included graphics. once i understood, i found it to be a unique concept which is rare when it comes to puzzlers. 4/5
i thought it was pretty cute. would be good to see increasingly harder levels with different songs. also you only use 2 sides of the screen--one for bats, one for spiders. why not open up the other 2 sides and come up with 2 more animals for later screens? start with 1, then 2, 3, 4 etc
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Sorry for the late reply; Nice.