INDOOR CASTLE PLAYGROUND For 3 to 12 years old, With a multi-level play structure. Playtime is extremely important for kids of any age. It helps keep them healthy, engage with others, and strengthen their motor skills. Innovative indoor play systems play spaces, and adventure parks to get kids running, jumping, and climbing, even when the weather isn’t cooperating. indoor play sets are becoming more and more popular, especially in cities. perfect for any medical office, school, family center, etc. If you strongly believe in play for children, then kids indoor equipment are the perfect thing for you.