Sorry for the year late reply, but developer of the game here!
To answer everyone's question about the 500 Megabyte File Size, it had to do with a lot of high-resolution assets we used. To be honest, it was something we didn't notice was piling up until we had gotten near the end of the project and had 60 levels of content.
Also, For those asking for a trailer, we do have one here:
One last thing, the game is now free. No longer $1.99 or $0.99, just FREE!