Originally the fading light portion was going to be exactly that with the upgrades, with the rituals feature originally planned to be morphing the rabbit into more and more of an eldritch being taking all the light from the universe, but somewhere along the way we prioritized getting the game in on time over adding in the feature, (we learned sprites take a long time to draw haha). If we re did the jam, we'd probably should've just added a simple light dimmer the more upgrades were purchased. Thank you for playing and for the feedback!