does not work

Alright.

Firstly, the graphics are fine as is, though they feel lacking as they are extremely repetitive. I would suggest maybe lasers that have different colors with different effects, which brings me to my next point.

It is VERY repetitive, you just fly or walk out of the lasers way and collect coins that don't really have a purpose, so why have them in? The music is mediocre and sets a laid back atmosphere, which doesn't really match the fact you're running past lasers with a rocket on you.

The space button pausing the game annoyed me, as you would instantly assume that's what makes you jump, so a notice or popup to explain controls would be greatly appreciated.

Then, what is the purpose of the game? why are we running through lasers? why are we a mouse that looks to be in a house? try to add some form of a story-line and goal to reach, otherwise there's no real point to playing this.

The controls (The rocket) is annoying, as it launches you straight to the top, and the mouse feels like he holds no real weight, until you let go that is, where he plummets straight to the floor. I would suggest not making the lift so instantaneous but rather gradual, to make it feel like you're being lifted, and not propelled.

I would also suggest you add fuel in the game as well, as something to pick up and be useful, just to give a miniature goal for the players.

Overall, this game needs a lot of work done to it to make it enjoyable, but it has potential, so I wouldn't completely scrap it.

Does it need to be Unity?