Numtanga:

https://gregtangmath.com/numtanga

 

Kakooma:

https://gregtangmath.com/kakooma

 

Numskill:

http://gregtangmath.com/numskill

 

Math Limbo:

https://gregtangmath.com/mathlimbo

 

Mystery Grid:

http://solveme.edc.org/mysterygrid/

 

Who Am I:

http://solveme.edc.org/whoami/

 

Mobiles:

http://solveme.edc.org/mobiles/

 

Connect Four:

https://www.mathsisfun.com/games/connect4.html

 

Bridges Math Apps:

https://www.mathlearningcenter.org/resources/apps