I had a lot of fun playing this! Love the music and art. The keeping the power on part was a bit confusing and I did get a bit lost when I returned to the game level after that, but I found the exit in the end.
That would be fun to have more levels, but yes, time is always a limit with these things. Feel free to drop me a reply here if you do add more, it would be fun to play some more of the game