Here are some good games and websites. They are all appropriate.
www.coolmathgames.com - Many fun math and strategy games!
www.hoodamath.com - Fun games and math games too!
slither.io - Don't run into other snakes/worms and become very big!
www.abcya.com - Educational games and fun games.
kizi.com - Fun games of all types!
agar.io - Eat food and grow large! (Tip- to have a free skin, name yourself Earth, Mars, or Doge
wings.io - Shoot other planes and get high scores!
funbrain.com - Fun games, but math games too!
wuki.com - Fun, fun, fun games!
dictionary.com - Dictionary
thesaurus.com - Thesaurus