Shell Shockers is described as 'new io game online Shell Shockers'. There are more than 25 alternatives to Shell Shockers, not only websites but also apps for a variety of platforms, including Android, iPhone, iPad and Android Tablet. The best alternative is Agar.io, which is free. Other great sites and apps similar to Shell Shockers are Slither.io (Freemium), Diep.io (Free), Mope.io (Freemium) and Wings.io (Free).
Survive as long as possible by eating swimmers and smaller fish. But remember: size isn’t everything in Piranh.io. Even the smallest piranha can defeat the biggest shark with POWERUPS! Use electricity to zap your enemies.