Play free Heart Box physics puzzle game! Professor Rat loves physics puzzles and games with robots! Therefore, he created Robby, but gave him a weak battery, which is why the little robot has to constantly recharge and participate in crazy physics based experiments. Take the robot through all of Professor Rat's interesting and dangerous physics puzzles to free him from the charger! Features: ▶ 200 levels of game for your IQ brain ▶ Over 10 thousand Community Levels ▶ 3 logic game modes - for a time, for a survival, bathe the ducky ▶ Level editor - a sandbox where you can create your own game ▶ Search and collect QR level cards with physics ▶ Adorable character and skins for Robby ▶ Short adventure cartoons with robots ▶ Innovative game mechanics ▶ High quality graphics ▶ Game Achievements and Leaderboards * Suitable game for autistic people