History.js : History.js gracefully supports the HTML5 History/State APIs (pushState, replaceState, onPopState) in all browsers. Including continued support for dat...
OverTheWire: Wargames : The wargames offered by the OverTheWire community can help you to learn and practice security concepts in the form of fun-filled games.
A game in the address bar using html5 history.replaceState
