Such a fascinating game!
As a fellow Copper Cube 6 user, this really impressed me. I did not expect a lot with the game, but it delivered on many levels. Just like you, I used to make games with the pre-made or default assets and it definitely can be improved, visually. Story telling was good and sound design, maybe a little change can help. Otherwise - solid game.
Best of luck with the future projects Cosmic Games! Cheers!