Here are some great web-based games for kids:
CBC Kids Games (age 4-10): Adventure games, beginner games, animal games, sports games, puzzles, and more
Cool Math 4 Kids (pre-kindergarten grade 8): games, quizzes, brain teasers, and more
NASA Kids Club (pre-kindergarten – grade 4): Games that support standards in science, technology, engineering and mathematics.
National Geographic Kids (age 9-13): Cool games to test your skill and cunning
PBS Kids Games (age 3-8): Learn new things and play the latest games with your favorite PBS KIDS characters like Elmo, Wild Kratts, Donkey Hodie, Pinkalicious, and Daniel Tiger.
Safe Kid Games (kindergarten - grade 8): Educational, learning, and fun games by age level
Scratch (ages 8-16): The world's largest free coding community for kids
Sesame Street Games (preschool): Play Sesame Street games with Elmo, Cookie Monster, Abby Cadabby, Grover, and more.
Word Game Time (age 5-10): Learn your letters, practice your words.
YTV Games : Games featuring your favourite YTV characters like Spongebob Squarepants