Three Branches of Government

http://www.sheppardsoftware.com/usa_game/government/branches_government.htm

https://www.brainpop.com/games/branchesofgovernmentgame/

http://texaslregames.org/games_web_eng/branches_game/branches_game.html

http://www.wartgames.com/themes/government/3branches.html

https://www.brainpop.com/games/branchesofpower/