I gave it a go, but I think I ran into a good number of bugs or something because I couldn't do anything to the fuel crystal, so I wasn't able to progress through the cave. Never the less, it was pretty interesting and when things get cleaned up in it a bit more I may come back and give it another chance. Thanks for the email to your game and I hope you enjoy the video!
What are your system specs?
Also, I can't reproduce the issue you had with the Fuel Crystal. Are you keeping the left mouse button down and dragging the crystal about?
One slight issue I did notice> the hand shows up slightly before you can interact with it, so you need to move a little closer, like one step. Will look into this.