In my search for educational games suitable for a 15-year-old boy, I found that "Kerbal Space Program" is an excellent choice. It's a game that combines fun with learning, specifically in the fields of physics and astronomy. Not only does it promote critical thinking, but it also sparks creativity as players design, build, and launch their own space vehicles. The game has a lot of depth, making it engaging for teens, and it's a fantastic way to indirectly encourage interest in science. It's a win-win, offering entertainment and education in one package.