BrainPOP jr. uses a great game titled Pearl Diver (developed by New Mexico State University’s Learning Games Lab) to help students review concepts of fractions and integers. They will practice dividing objects into different amounts by cutting up eel for use in sushi. They will determine where the diver should dive for pearls based on where fraction amounts are placed (or should be placed) on a number line. The same process is used for practicing positive and negative integers.
Disclaimer: This game is to review concepts by putting them to practical use. This game does not explicitly teach these concepts.