Xemo: Robot Sim

Xemo: Robot Sim is a physics-based simulation in which you create motions for humanoid and four-legged robots, then use them to tackle obstacle courses. You can combine motions into control sequences and compete with friends and rivals for a place on each level’s leaderboard. Improving your robot’s speed and efficiency depends on developing better motions.

Robots and physics

The simulation includes four robots: Xemo, a humanoid with 13 joints and 24 degrees of freedom; Sami, a simple four-legged robot you teach to crawl, turn, walk, jump and turn over; Buster, a more complex quadruped that walks somewhat like an ant; and Fido, a dog-like robot with hip and knee joints. An integrated rigid-body physics simulation governs their movement.

Create and control motions

The Robot Lab and Pattern Editor let you create motions, which you can combine in the motion sequencer. The Balance Controller is designed for bipedal robots, while the Evolution Engine can evolve complex motion behaviors. The Gravity Well suspends and positions a robot in mid-air. You can also adjust its ankle, knee, hip, abs, shoulder, elbow and neck joints in the Joint Editor, and set each joint’s speed and strength in the Spring Editor.

Levels and competition

The game includes 16 levels where you compete with your robot, with a leaderboard for each level. You can share motions with the Xemo community and earn rewards for doing so. Environment and machine sound effects accompany the simulation.