Outwitters - Outwitters developed and published by One Man Left is a Strategy and Single-player video game.
Zizzle Inventions - The STEM game for kids 3-7
Submarine Popper - Pop the submarines before they pop your ship!
Tinker Crate - Birchbox for STEM-themed DIY projects [for kids 9-14]
Arcade Trail - Crowdsourced game discovery & curation platform
Tappity - Tappity teaches your child about science from experts.