18 months is kind a long. As a game developer I suggest you jumping on some easier platform like GameMaker or Construct 2 and just learn from vast tutorials available.
The game is very nice and I like the gameplay - it is engaging. Good luck with sales!
Thanks for the feedback! I agree 18 months is a very long time to be working on a project. A lot of the time was spent on level design, and I did learn so very much while developing it that I think it was worth the time put into it, even if sales don't turn out to be great. Next time I make a game it should go much, much more smoothly, though :)
The game is very nice and I like the gameplay - it is engaging. Good luck with sales!