Inductive Math Games courtesy of Byrdseed (blog)

The Product Game (NCTM)

The Game of SKUNK (NCTM)

3 to 15
(You won't appreciate how challenging and engaging this game is until you play it. The modifications suggested allow you to tailor this game to meet the needs and abilities of your students.)

The Factor Game (NCTM)

The Fraction Game (NCTM)

Games that Encourage and Enhance Mathematical Reasoning and Sense-Making
(a recorded webinar presented by NCTM in the @edWebnet community)