Gameplay is presented on a 2D puzzle screen where players drag and place parts into a workspace to trigger a required outcome, such as moving an object into a target or activating a switch. Each stage gives a limited set of components and often a budget, forcing careful planning and experimentation. The game emphasizes timing, object physics, and cause-and-effect chains. A single-player puzzle mode is the core experience, and a two-player competitive mode allows both players to solve the same puzzle as quickly as possible.

Start by identifying the final trigger and work backward through the chain. Use inexpensive or simple components to test timing before committing to a full solution. Leave space for moving parts, and avoid letting one mechanism interfere with another too early. In more difficult stages, build the path of motion first, then fine-tune angles, delays, and launch power.

Tips and tricks

Testing a partial chain often reveals timing problems before the full setup is finished.

Tips and tricks

Some puzzles have multiple valid solutions, so try rerouting motion instead of forcing one exact layout.

Tips and tricks

Keep movable objects clear of hazards until the intended moment to avoid accidental failures.

User Reviews

Praised for its imaginative puzzles and satisfying chain reactions.

User Reviews

Many players consider it a richer and more polished sequel than the original.

User Reviews

Its physics-driven design remains memorable even by modern standards.