Quantum Conundrum is a puzzle platformer in the first person. The protagonist is a twelve-year-old boy whose mother regularly sends him to her brother Professor Fitz Quadwrangle’s mansion because she feels the genius is lonely. During one of his trips, the professor’s experiments go wrong, trapping him in a pocket realm. It is up to the youngster to solve the challenge, as Quadwrangle can only observe and speak to provide instructions. The youngster travels through the mansion, and because of his age, the perspective is low to the ground, making the objects and rooms appear much more prominent.
Initially, the youngster can just walk about, jump, pick up, drag, and toss. He eventually gains access to the Interdimensional Shift Device (IDS), which allows him to shift between dimensions. Everything becomes lighter and simpler to pick up in the Fluffy extent. Heavy is the inverse; weight can cause items to break and obscure lasers. Slow slows time by ten times, and Reverse Gravity reverses gravity in the environment. Regardless of the dimension, the boy’s movement remains unaltered. In some rooms, a measurement is immediately triggered; however, in others, capsules must be gathered first to switch dimensions. Later stages involve a fast movement between sizes to solve puzzles. For example, in the Fluffy dimension, an object can be picked up and hurled, and while it is still in the air, a switch to Heavy can cause it to break through a surface. Using Slow allows the boy to throw an object and then jump on top to ride along. Many puzzles also emphasize accurate platform leaping.
