Hands-on Play with the Numbers Game from Osmo. Kids arrange physical tiles, including dots and digits, to make numbers and complete levels. Add by putting more tiles, subtract by removing tiles and multiply by connecting tiles together. Experimenting becomes fast and intuitive. Osmo games bring a child's creative imagination to life with hand held pieces that interact with an iPad and/or Fire Tablet and an Osmo Base (No Wi-Fi necessary for game play). Numbers requires an Osmo Base to play and this game does not ship with an Osmo Base. An Osmo Base for iPad or Fire Tablet must be purchased to play Numbers. Approved by parents and teachers worldwide, used in over 31, 000 classrooms.