Makes sense.One issue I saw was that you often can't spend your last money. Prepare for jump [4] and I have [4] same with buying ships.
But I like it. It's simple, and easy. I could see the game expanding in complexity while keeping the same theme. Well done.
Thank you for your feedback. May be we find some time and inspiration to make it in something bigger.
Thank for report. Will check and fix. :)