🎯 Ottoworld Mastery Mode 📋 Our science games are designed based on the Singapore MOE science syllabus. Your child can play at home, at their own pace. Each game has 10-20 games levels that goes from easy to hard. Your child can learn about living and non-living things 🐱, materials ⚓, matter 🚧 and more. Play our games on iPad, phone or laptop! You can also monitor what your child's learning progress using our web portal for parent.