Educational games and activities have proven benefits for achieving learning objectives. They motivate competition, provide immediate rewards for success, and encourage collaborative, problem-based learning - all while framed as a fun activity, rather than laborious task. An overview of ATLAS educational games developed by members of the ATLAS Collaboration is given, including: `Making a Splash', a water-balloon game teaching the physics of colliders; `Proton Cookies', explaining the constituents of a proton through baked goods; `Build Your Own Particle Detector', using stackable plastic bricks to talk about particle detectors and physics ; and `Particle Twister', teaching the Standard Model through the game of Twister. Use cases of these games are described and user feedback is presented.