NOT a good game, Period.
Haven beaten the game, I can honestly say that it's no good. It is not user friendly what so ever and difficult, though the developer did point this out to be intentional. But even then, Major steps could have been taken to make it a much better looking AND playable game - such as platforms and double jumping. This game has no replay value whatsoever, even remembering all the traps and ways to go.
With that said, I still had to laugh at myself for getting so frustrated as such a simplistic game. I even had a "ah f***!!! NOT BRINISTAR!!!!" moment, when I saw him appear. Now there is a game that is good to play, yet difficult to master.