Check out these fun odd and even games:
http://www.sheppardsoftware.com/mathgames/earlymath/Fruit_shoot_odd_even.htm
http://www.sheppardsoftware.com/mathgames/monkeydrive/numbers/MDOddEven.htm
http://www.doorwayonline.org.uk/oddandeven-fullscreen.html
http://www.primarygames.com/math/matheggsevenodd/
http://www.learninggamesforkids.com/featured-games/odds-evens-level-one.html
http://www.sheppardsoftware.com/mathgames/earlymath/Fruit_shoot_odd_even.htm
http://www.sheppardsoftware.com/mathgames/monkeydrive/numbers/MDOddEven.htm
http://www.doorwayonline.org.uk/oddandeven-fullscreen.html
http://www.primarygames.com/math/matheggsevenodd/
http://www.learninggamesforkids.com/featured-games/odds-evens-level-one.html