There are plenty of board games and card games that include mathematical concepts and/or can be used as math lessons. Some can even be played over the phone!
Here are examples of games and math concepts they reinforce:
Battleship: Coordinates, can easily be played over the phone
Monopoly- Multidigit addition and subtraction, percentages for tax, doubles
Farming Game-Multidigit addition and subtraction
Sorry-sums on dice, backwards, forwards
Parcheesi-sums on dice, doubles
Uno-matching colors and numbers
Settlers of Catan-probability (The dots on the letters show increased likelihood of rolling sum.)
Yahtzee-multiplication facts, addition
Scrabble-addition, doubling, tripling, spelling. Fast Scrabble can be played over the phone.
Blockus-spatial reasoning, area
Traffic Jam-spatial reasoning
Chess-logic, spatial reasoning
Ticket to Ride-visualization, geography
Hi Ho Cherry-O-counting
Math Card Games- https://www.weareteachers.com/math-card-games/
Finally, the elementary math curriculum,
Investigations in Number, Data, and Space®, published by Pearson Scott Foresman,
provides many games that are used as homework. This curriculum may be checked out from the MAPS Math library. I have successfully taught from earlier editions of the curriculum that can be purchased rather inexpensively online.