http://www.onemotion.com/flash/snake-game/
http://www.lilgames.com/cubes.shtml
http://logicgames.com/webgames/frogjump.html
http://www.y3.com/games/1849/Cube_Field
http://www.y3.com/games/21075/Prizma_Puzzle
Typing Games
http://freetypinggame.net/play.asp
http://www.onlytypinggames.com/
Construction Games
http://www.learn4good.com/games/simulation/build_bridge_across_canyon2.htm
http://2dplay.com/under-construction/under-construction-play.htm
http://www.stackopolis.com/play/
Electricity
http://www.candystand.com/play/electric-box
Railroad
http://www.gamesgames.com/game/railroad-3.html
Interactive Expedition
http://www.history.com/shows/expedition-archived/interactives/expedition-game
http://www.history.com/interactives/place-the-state-game
http://www.mapmsg.com/games/statetris/usa/