As the title hints, the sounds of "Water Bomb" are aquatic. Everything sloshes around, and the drums sound like shotguns going off underwater. This lends a psychedelic tinge to the track's otherwise powerful thrust. There are plenty of other odd touches—wheezing drills, a squalling bassline—that make it feel like a gauntlet of sound effects. You couldn't really call it techno or dubstep or grime. "Water Bomb" is the kind of track that makes you stop in the middle of a set and think, what the hell is that? (You can hear an early version on Mumdance's Fabriclive mix from 2015.)
"Cold New Worlds," with ominous horns, more watery sound effects and drums that creep rather than lunge is on the B-side. It's the inverse of "Water Bomb," with all of its creativity and dexterity applied to a sparser template. But as weird as "Cold New Worlds" and "Water Bomb" are, you wouldn't have any trouble dancing to them. Ellis can make something you know how to move to, even if you've never heard anything like it before.