KrewClassic.io is a free IO game. Enjoy Krew Classic! Krew.io is an awesome on the seas cannon fire game in a 3d environment. You start off on one of two teams indicated by colours and control a ship with a cannon going around destroying other ships. This game is tons of fun to play with friends or even alone as you can single handedly dismantle a fleet if you’re skilled enough, in classic format!