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Yes. Brain Arena is currently playable for free. Stage progression and participation in the World Cup are also available with no additional fee.

No, it is different from an IQ test. Brain Arena is not a medical diagnosis tool; it visualizes and gamifies cognitive ability as competition. It still includes overlapping domains such as reasoning, memory, and processing speed.

Brain Index is an indicator that updates your Speed / Memory / Logic / Control profile based on Daily Arena results. It helps show which abilities stand out against a fixed benchmark. It is not an IQ test or medical diagnosis.

SPEED: the ability to judge and react quickly MEMORY: the ability to process while retaining information LOGIC: the ability to detect rules and structure CONTROL: the ability to suppress impulses and act accurately Each game is designed to use these abilities in different proportions.

By checking your ability-specific scores, you can see which abilities are currently strong and which abilities have room to grow. Rather than simply "fast or slow," you can understand yourself as an ability profile.

Choose the game you want to play and challenge stages in order from stage 1. When you clear one, the next stage is unlocked.

Brain Arena is a global cognitive competition platform built around four abilities: processing speed, memory, reasoning, and cognitive control. It lets you experience pure thinking ability through games without relying on language knowledge.

Many brain-training apps are designed for practice, but Brain Arena is designed as an actual competition format. It has a world tournament. Everyone competes on the same problems. Paying does not create a gameplay advantage. Abilities are visualized as measurable scores. Instead of vague training, Brain Arena is built to measure and prove performance.

Fairness is one of Brain Arena’s most important design principles. All players compete on the same stages in the World Cup Payment does not affect competitive results Scores are standardized by level These keep a structure where ability is reflected correctly.

Yes. Each game uses different abilities and rule structures. Reasoning-focused games Memory-focused games Speed-focused games The combination of abilities varies by title.