This is a wonderful tribute to games, art, and games as art, I say. Here are some of the things I loved about your game: I loved purposefully pushing oil away from my robot arm just to be different. I loved the attention to detail in the menu section and the sound design/gfx. I loved how the audience pelt the robot with rubbish when they are bored with it. I can tell you put your soul into this game and I think you did a great job.
Some minor constructive criticism would be things like a) not spawning anywhere the player has *just* touched, so they get to feel the satisfaction of cleaning/scraping b) having the audience be more fervent fans when the player is doing well, c) have the player understand when their oil is low (i think thats how the player loses the game?)
I also find the controls a little inaccessible as I have some hand disabilities that make it a bit challenging to play for the amount of time it is asking me to.
Still though, great game! Very awesome.