Quick Question, did you get anyone to test this before you uploaded it? To be honest the gameplay is not very good but seeing as its your first upload and im in a good mood ill give you some feedback. Its too easy to get the marios to merge into one which completely removes any pretense of challenge. The level design makes no sense, as far as i can see, as if youve chucked together whatever you could just so that there would be something there.
The way the character interacts with the wall makes it easy to slowly climb over any obstacle and you dont always slide down walls, along with being able to merge the two marios it removes any semblance of difficulty at all. I kinda like the idea for the game, having an echo of a character follow him, but you need a higher skill level to pull it off
thanks for the feedback, and Im kinda the only one that tested it... What do you think I should try to make?