I watched the video, and the game looks unplayable without physical buttons...
I played through the entire thing, so...yeah. Not "unplayable". Actually, quite "playable". Again, you simply tap on the screen to make him go forward, tap an enemy to attack, and tap on a ledge to jump to it. I admit that it takes a bit of getting used to, but once you do it's really quite a good game.
Anyway, it's not a Bonk ripoff, but I figured since this site has so many Bonk fans, that a few of you may be interested.