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