I think its a nice concept, although i found the game more punishing than rewarding where it felt like i wasn't quite making visible progress.
For starters, having a tutorial would have been awesome, though i quickly figured out the controls.
When i first got to the 3rd level i expected to get to a slightly more complex level design, i was hoping to see something a bit more engaging, maybe being chased by a new red square enemy type or something with the level looking like a maze.
In all though, it was good idea which needs to be stretched a bit to see its true potential.
Best of luck, i totally understand that Game dev is freakishly difficult, so best of luck on your future projects. I'm looking forward to seeing more from you.
Keep on making cool stuff.