Mary Raleigh (Dr. Roly Poly), a whimsical professor of robotics engineering, has developed a game to teach her students concepts in automation. The aim of the game is to guide a marble through a maze using only a small set of context-based rules. You can try to solve the various challenges she's devised or make your own!

Controls

Term........................controller / keyboard / mouse

Navigation...............d-pad / arrow keys / mouse

Primary button........O button / Z or C key / left mouse button

Secondary button....X button / X or V key / right mouse button

Menu button............options button / enter key / middle mouse button

Quick Guide

The main game is a series of challenges available from the main menu. Open challenges will appear with a name and illuminated preview. Simply press the primary button to play it. Completing unfinished levels will unlock new ones.

While inside a challenge, the game board is divided into a grid. After each turn, the grid will shift.

The grid cell that contains the marble is the marble’s context. This context is used for the table on the right. During a turn, the marble context on the left will result in the configuration on the right.

Please note that each entry in the table has rotational symmetry. That means, that each entry covers four possible scenarios.

Each entry has an icon to the left that determines something about the entry:

• solid circle: result is already set but can be changed by the player
• hollow circle: result needs to be set by the player before it can be used
• lock: result is set by the game and cannot be changed
• "X": context is a failure condition

Solving a challenge requires figuring out how these entries need to be set to get the marble to the goal.

Source: Original Lexaloffle Post