I ADORE the Music. I totally dig it. It's simple, repeats somewhat quickly, yet the progression in each song is enough to where it's just right. I love that the music changes depending on what area you're in. The boss theme was AWESOME and I felt pumped fighting it.
I also Love the Aesthetic Factor. I wish I could Play this in fullscreen on a big TV. I Love everything about the way you did the Graphics. The CRT filter is a beautiful touch, Even though I'm playing on a laptop, everything looks Crisp and Clear. (As far as the pixel placement and CRT lines go) I'm Personally not having any problems with any lag. There's also a good level of challenge. enough that I can't just breeze through, but not so hard that I rage. This game Is awesome, And It's probably one of my favourite Metroidvania Games I've seen so far.
There are a few things that confused me however. I didn't understand the point of the gem-shaped things that you shoot. I'm also not sure what the Things are that you get from the things you spend the coins on are or what they do.
A few suggestions, If I may:
A map Would be extremely helpful. I really do wish there was a map that I could Check to figure Out where I am. I actually haven't been able to finish the demo yet because I got lost and wasn't sure where to go next.
there are a few areas where I feel like the obstacles are a bit overbearing and a bit too much. (Specifically the Purple Area.) in those same areas it also feels a little Claustrophobic. So perhaps removing a few obstacles and/or opening it up a bit to give room for movement would probably be a good Idea.
More Storyline would be really nice. I'm not exactly sure what's going on in this universe. so more story would be nice. Then again, I kinda figure that the story would develop along the way as you progress anyways.
At the loading screen with the:
That would be cool if there was a way to type stuff, perhaps add some kind of easter egg(s)?
overall I can see this game going places. It's beautiful. It feels like a combination of Mettroid and CastleVania. This is basically the definition of Metroidvania. I can almost feel like I'm playing in my Gameboy Advance while playing this. Keep up the phenomenal work.