If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Inferno is an action game in which you work for the fire brigade. Grab your hose and use it to extinguish all fires. You can also use the hose to reach higher grounds. Collect the coins to upgrade your gear.
W, A, S, D / Arrow Keys - Move.
MOuse - Aim / Shoot.