Themes
I stuck to the 64x64 core theme, but outside of that I didn't really incorporate them. I had intended on using "Peaceful", and trying to make a more ponderous trip around space, with additional dialog from passengers etc (a la Cloudpunk, perhaps), but found during testing that it was more fun going fast around space, so it became a lot less peacful!

Tools
I used DragonRuby on the code/engine side. As a Ruby on Rails developer in my day job, I really appreciate the speed and simplicity of working in Ruby. I used LibreSprite to draw my sprites, and the excellent Pixel Planet Generator (https://deep-fold.itch.io/pixel-planet-generator) for my planet sprites. Music was all created on my trusy Dirtywave M8 Tracker.

Lessons
As ever, I learned that I don't have time for a fast paced jam, which is why I love LowRezJam. I probably spent <24hours all in on the game, but got to spread it out over the two weeks, and play with some ideas that have been rattling around my head. The biggest lesson, though, is that I need to give myself a soft deadline a few hours before closing so I can spot silly bugs (like the player start position being at a test location I was using, or the music not looping when it finishes!