Awesome Idea!!!!
Would be nice if you could write down the controls on your games page, took me a while to figure out xD
I think the contact bomb makes the Instant bomb a little useless, so maybe the contact one should have less power to make the contact one more useful? Or just limit the amount of contact bombs. Plus they stack, so if you put multiple in one spot you get launched further, which I like, so limiting the amount might be better.
Ghost bombs are a cool idea as well!!