Thank you for the feedback! I feel like keeping arrow keys pressed for a long time can feel tedious very fast so a virtual joystick could help with that too. If you play on mobile there is a default virtual key screen that appears (it's from the engine I use, Pico 8) but I don't think it can be activated on computer. I feel the control for this game could be a lot better, it doesn't feel very precise and having a "analog" joystick input could help.
Thanks for the suggestions, I don't know if I will add more to this game in the future. If you don't know it already, check the commercial game Dome Keeper, it was a big inspiration for my game.