The Baby Einstein Ocean Explorers Go Opus Go Crawl & Chase toy features 4 modes that include Tummy Time, Sit & Play, Chase, and Dance. These cool modes grow with your baby's physical and cognitive needs, and reinforce fine motor skills, listening skills, and cause and effect learning.Eight plush arms respond to baby's slightest touch while also allowing Opus to run away from babies and toddlers in Chase mode. During Tummy Time mode, touch an arm to see Opus light up, spin, and play music to encourage baby to dance. During Sit & Play mode, Opus teaches shapes, opposites, colours, and numbers. There is nothing Opus can't do for your little one!