I'm glad I played till the end :) I must say I guessed the level 2 word (well, bruteforced to be exact). Fun game and fun concept, I like that I could either flash or just move my flashlight (for the camera to be in or out of range) to send signals to the camera. It was also interesting that the park got smaller for the last level, this could easily be made a longer game in general. Visuals and audio were good, it's sad there were no audio controls, and volume up/down on my keyboard also made the player move left/right somehow :P It reminded me a bit (especially that one riddle involved audio etc.) the old online puzzle game "notpron", don't know if you heard of it, it just reminded me of some puzzles and bruteforcing some solutions there back in the day.