Chrome has a hidden dinosaur game which you can play in the browser when you’re offline, this no longer required now as Google has created a dedicated page for it so that you can play the game even if you’re online. All you need to do is visit chrome://dino page and press <space> button on the keyboard. You need to be using latest Chrome Canary for this, you’ve to wait for some more time for this time wasting game to be available in the stable channel.
