Thank you for your extensive review! I will definitely try your game out. I am aware that the color of the guards or the passes dissapearing are two elements that need a bit of "imagination" to make sense of. Originally I designed it as you proposed, but I realized I couldn't design interesting puzzles, and no gameplay rules emerged from that. That's why I lost so much time figuring out the gameplay rules and couldn't make a lot more levels. After this jam I will probably make more; a lot of interesting ideas come to my mind when I give it a bit more thought.