STP writes: "Somewhere, beyond the sea, there are colorful balls that disappear when they're matched together. As a little tilt-controlled submarine, it's your job to knock these balls, which appear to contain some sort of toxic waste, into one another. However, cumbersome controls and odd physics make this a clumsy, ill-conceived puzzler.
One advantage BioSub has is that it contains 70 levels, but like the old joke goes, the food is awful even if the portions are huge. The levels themselves are bite-sized, meant to be completed in less than 30 seconds, but several require careless trial-and-error that often results in an accidental victory. This is because you seldom have enough actual control over what you're doing."