4 Ninja
Four ninjas, four colors. They live in tubes, and need your help to train for self-protection. The enemy is approaching and their place is not safe anymore. The enemy will attack inside each tube and their weakness is the skin color of four ninjas, which will destroy the enemy only if it's combined with the tube color.
GON Memory Game
GON has been created to train your brain on memory and other skills, while constantly engaging you in tasks that require concentration and instant feedback.