Become a colossal twin boss in a massive city! This fun game lets you grow into a giant, destroying the environment and becoming the universe's fattest being in a surprising rainbow friend-style adventure. Outsmart your opponents and control the action.

Delicious treats like burgers, chicken, and sweets are abundant in this ragdoll town. While mama cares for the baby in this nurturing game, the hungry giant is far too clever. Navigate a destructible world, avoiding dangers along the way.

Use your resources to buy power-ups and unleash destruction! The bigger you get, the more you can eat – burgers, donuts, even people! This is Fat Twin Sibling!

Two fat siblings compete to become the largest. Eat everything in sight and become the fattest siblings ever!

What's New in Version 1.4

Last updated September 1, 2024

Minor bug fixes and performance enhancements. Update now for the best experience!