Project C.A.R.L is a physics sandbox game where players experiment with weapons, environmental objects, and a simulated test subject named Carl. His name stands for Clinical Assistant for Research and Learning. The game uses a ragdoll physics system that simulates how Carl’s body reacts to different impacts and interactions. There is no traditional storyline or campaign involving named characters. Instead, players create experiments, observe their results, and explore the available simulation mechanics.

Understanding Carl’s Physics System

Carl has a simulated skeleton, internal organs, and circulatory system that respond dynamically to physical forces. Different weapons produce different reactions depending on their characteristics and where they strike. Players can reposition Carl, manipulate objects, and experiment with collisions or falls. The physics gun allows them to move the test subject around the environment, making it possible to create situations without relying entirely on firearms.

Exploring the Laboratory and Testing Areas

The game includes two maps designed for different experiments. The Lab provides a contained testing environment, while the Vertical Impact Test Site features an elevated platform reaching 16 meters and structures for testing falls and collisions.

The main gameplay features include:

• A ragdoll character with simulated anatomy.
• Six firearms with different characteristics.
• A physics gun for manipulating objects.
• Environmental collisions and falling experiments.
• Dynamic injury and blood simulation.
• Two locations with different testing environments.
• A separate zombie wave survival mode.

How to Play and Experiment

Players select equipment and interact with Carl using the available weapon and physics controls. The sandbox allows experiments to be repeated with different conditions, such as changing the weapon, adjusting Carl’s position, or using objects in the environment. The testing areas encourage players to investigate how the simulation responds to various forces.

Project C.A.R.L does not contain numbered story levels, character upgrades, or a fixed ending. Most gameplay takes place in Sandbox Mode, where players determine their own objectives. The additional zombie survival mode introduces waves of enemies and shooting challenges, providing an alternative to unrestricted experimentation. Progress is measured through the scenarios players create and the results they observe rather than completing a traditional campaign.