Heart Box

About the game

Heart Box is a physics puzzle about a square robot named Robby who runs out of charge fast. Professor Rat built him with a weak battery, so every room ends the same way: get Robby onto the red charging station. To do that, click or tap objects to pop them, break them or slide them around.

Rooms differ in how much thinking they ask for. Some need one well-placed click, others need a chain of falling parts to line up. The physics does the rest, and when a plan collapses you just try a different order. Over 180 built-in levels, four modes, robot skins, leaderboards and achievements sit alongside a level editor and a community database of player-made rooms.

How to play

• Left click on a computer, or tap with a finger on a phone, to pop, break or move an object.
• Guide Robby onto the red charging station to finish the room.
• Objects react with real physics, so the order you touch them in changes the result.
• Build your own rooms in the level editor or load ones other players made.

• Free
• No download
• Works on phones