One of the best things on this site is thinking blocks. These help build conceptual knowledge of operations.

Offering a wide range of interactive math games, logic puzzles, and problem-solving activities. Its user-friendly design and engaging content make learning math fun and accessible for kids of all ages. The platform covers various topics, from basic arithmetic to advanced geometry, supporting skill-building and critical thinking. Parents and teachers appreciate its educational value, while students enjoy the playful approach to learning

The games were good, I can see the kids learning with these games. they are kind of buggy which can be distracting.

Math Playground has potential. It covers quite a few math subjects from fractions to pre-algebra and also includes different skill levels. I also enjoy that it's art style is definitely designed to attract young children's attentions and most kids will find the games engaging. However, the amount of games is simply overwhelming. If the featured games are not what you are looking for and you click on the "more games" option you will find yourself with a wall of a large number of games, each with a different concept than the next. There is simply no time to go through them all and having to scroll through so many makes the sight a little unappealing. As the description on Common Sense Education says, there are also many advertisements that can be seen as distracting and many of the games are unrelated to math or do not help build reliable math skills.