It could be kinda fun, but it just boring, as the game doesn't get any harder over time, so it get's boring. Also there's no juice, so sound effects, camera shake and particles, would be very good to add, also walking animation, as it just looks weird, them moving without their legs doing anything, also the art is very inconsistent, as the background and ground don't have an texture. Also a tip to make game look very good (ONLY WORKS IF THE ARTSTYLE IS CONSISTENT), add post processing, 2 minutes, 300% better looking game.