Other

I like the music and the idea of the game, but it could need some more work like Xecutioner said.
Only problem I had with the game was the lack of information I got, both during and after the game was done. The first time I played through I had no idea what I was controlling as I thought I was just watching the intro (I mean this problem may just have been me being an idiot).
The ending (not sure if this was on purpose or not?) if you died as half a heart was just half a heart beating forever. What happened at the end after beating the game as a whole heart really wasn't that much better either, the game just closed.
But after playing through the game twice and finally getting an understanding of what was going on, I quite enjoyed it.
I'm excited to see upcoming improvements to what could possibly be a pretty nice and well executed game.
: )

just i think that was a UNDERTALE fan-game?

Good for relaxing, but bad for fun... ALSO FIRST!

I played the actual game and it's OK. The framerate is nice, art is good and a nice soundtrack. However, the idea isn't exactly unique and I was quite dissapointed by the lack of any form of backstory, loosing animation or any 'game over' sign at all. There is also no indication of health, no basic rules, i.e, why do you turn black when you get hit? Does it make you invunerable? Does it mean you red heart is turning into a black heart.
The game is a good idea and a nice start, but it could use a lot more improvement.

well the trailer is unavaiable. Great.