"Unlike workbooks, games provide opportunities for mathematical discussion. For example, asking "How did you solve it?" and "What reasoning strategy might you use?" helps students to develop and practice strategies and parents to hear those strategies. This encourages parents to focus on fluency and not just automaticity. Instead of always assigning traditional homework, it is important to occasionally send home specific games as homework. Provide instructions that ask parents to play the game several times with their child and encourage the child to write a summary of what happened as they played."
~ Jennifer Bay-Williams and Gina Kling, Math Fact Fluency: 60+ Games and Assessment Tools to Support Learning and Retention, 2019