M.A.D. video review:

Equation Pong: http://www.xpmath.com/forums/arcade.php?do=play&gameid=105

Algebra Meltdown: https://www.mangahigh.com/en-us/games/algebrameltdown

Battleship: https://www.quia.com/ba/36544.html

Equation Balancer: http://www.mathsisfun.com/algebra/add-subtract-balance.html

2 Step Arcade Games: http://www.classtools.net/arcade/201411_iYXBDQ

Please see the videos below to review modeling addition/subtraction with algebra tiles and also modeling/simplifying algebraic expressions.

Adding/subtracting integers with algebra tiles:

Adding/subtracting integers by drawing algebra tiles:

Modeling and simplifying algebraic expressions with algebra tiles or by drawing algebra tiles:

Video reviewing how to calculate the GCF of a algebraic expression and then how to use the distributive property to factor out the GCF.