Fun little game, flying in space took a moment to figure out. Once I did I enjoyed gliding around space and trying to get the souls.
If you wanted to improve, I suggest adding some additional form of light. Maybe make the orbs glow, definitely make the van glow. Maybe a planet in the background illuminating the play space could be cool. Also, some particle fx to show when a soul is collected would be nice.
Overall cool concept, If you choose to continue working on it, let me know and I'll definitely play it again!