Kind of fun, reminds me of an NES or maybe a Colecovision game. But other side scrolling platformers are just as fun for $1-$2. I wont name them but it doesnt take much looking.
What I dont like is the "swipe to shoot" control scheme. Its awkward and slow, and you just end up running in full auto because its easier. It would have been far better with simply a shoot button, joystick controller, jump button, and maybe limited ammo. Its kind of boring just running through blasting everything in full auto.
Whatever it is what it is, but I would NOT have bought this for $5 had I got to play it before. $2, maybe... $1, yes.
Iron Lee about Kero Blaster, v1.0.6