Killing Floor 3 is a horde shooter where players fight against waves of Zeds, mutant monsters from the bioweapons corporation Horzine. The game features evolved character classes with unique abilities, such as the Commando with a drone and the Engineer with sound cannons. The progression system allows for quick leveling and unlocking traits, enhancing gameplay. Combat is dynamic, with upgraded Zeds exhibiting new abilities, including the Scrake's chainsaw and Crawlers' wall traversal. Gunplay encourages close-quarters combat, and the Ninja class focuses on melee attacks. The game maintains its cooperative gameplay essence and is set to release on March 25, 2025.