logic, puzzle, gravity, steel balls, solo, challenge, board game
logic, puzzle, strategy, single-player, spatial reasoning, problem-solving, dexterity
Where Do Space, Time and Gravity Come From?
The Last of the Universe’s Ordinary Matter Has Been Found
Seven Brief Lessons on Physics
Erik Verlinde's Gravity Minus Dark Matter | Quanta Magazine
Super Mario Galaxy 2
LEGO Star Wars: The Complete Saga
Prince of Persia: The Sands of Time
The Legend of Zelda: Ocarina of Time
Super Mario Bros. 2
Super Mario Bros.
Mega Man 5
Mega Man 9
Earthworm Jim
Mega Man X2
