This is a wonderful website which keeps kids engaged and provides lots of kid-friendly, fun games
Although it has suffered slightly as a result of adobe flash player shutting down, there are still lots of great games that can help students, especially elementary and middle-schoolers, to practice applications of math and critical thinking. Frankly, I would rather student play these games than just about any other video game. The only slight issue is the malware in the ads, but I use this as a learning tool to teach students to avoid getting scammed.
How I Use It
This is a wonderful tool you can use to have students apply learning and math concepts to their games, although I wouldn't base a curriculum off of it. It's more like a fun website you can use to provide additional learning when your students have completed their lessons.