I do find this game enjoyable, though it lacks variation.
it's to a point where it's more of a 'push the red outline guy into a hole game'
to make it more enjoyable, I recommend making the red guy harder or have more red guys to make it a challenge.
overall, I do like the game, just only in one gameplay, then I get bored that I decided to jump into the hole.
also I don't see the score being based on combos while pushing someone into the hole as a good high score value.