2. StarCraft
This is a science-fiction, real-time strategy game that ranks second in our list of online problem solving games for adults. It features alien species that are fighting for dominance. Each species has a fighting unit that’s different from other species and requires a unique tactic to win. Also, the StarCraft has a resource management in order to build and sustain units. A study has shown that this game can improve brain flexibility and the ability to think under great pressure and challenging circumstances. Scientists have described this as the cornerstone of human intelligence.
