Summer puzzle run: Complete 20 levels in 1 hour to get 75 bulbs

Enjoy a refreshing summer puzzle event in Brain Test 4. Complete 20 tricky levels in just 1 hour and get 75 bulbs as your reward. This short and intense experience is filled with clever puzzles, fast thinking, and a seasonal twist to keep your mind engaged. A perfect event for players looking to boost their bulbs while enjoying fun and challenge under the summer sun.