Embark on an epic adventure in the Giant Big City, where you'll transform into a colossal twin boss in this thrilling jumper game. As the yellow sibling, you'll experience an entertaining journey, growing to a massive size by consuming an astonishing number of pounds. Turn into a goliath capable of obliterating the earth and becoming the universe's fattest entity in the startling Rainbow Friend games. Use your newfound size to create illusions and manipulate situations to your advantage. In the Ragdoll town, you'll find an abundance of fast food delights like burgers, chicken bread, and cookies, all part of the Naughty Rainbow Friends' huge sibling antics. While Mama takes care of the baby in nurturing games, the fat, hungry goliath outsmarts everyone in the cunning hero food game. Navigate through a destructible environment, skillfully avoiding dangers along the way.

Harness your oil to acquire boosts and unleash your powers to wreak havoc on everything in your path. The larger you grow, the more devastating your impact becomes. Feast on burgers, doughnuts, and even people! This is the world of Fat Twin Sibling, where the goal is to become as fat as possible. Engage in epic battles with other fat siblings, striving to outgrow them all. Eat everything in sight and become the fattest siblings in the universe.

What's New in the Latest Version 1.4

Minor bug fixes and improvements. Install or update to the newest version to check it out!