Needs work, I'm sad to say.
I thought I was in for a nice challenge, but this is just annoying. The controls took about 80 restarts to get decently used to, for one thing. I'd suggest letting users change their controls. Plus, there are no checkpoints, there is no tutorial level of any kind, the instructions seem incomplete, and the hitboxes are anyone's guess from what I've seen. Ads are kind of annoying, plus a lack of music or more than a couple sound effects. Supposedly there is some way of attacking the crabs, but what seems to work one time fails miserably another. One thing this game just suffers without is some sort of humor to make it worth all the retries. Say, is the whole game one level? I don't know about anyone else, but I prefer a few dozen hard levels over one annoyingly hard one. I say this game could be okay if it was given a little more work to make it hard but enjoyable instead of hard and annoying/bland.