› Not JJT Upgrade Tree

what is Not JJT Upgrade Tree?

Explore multiple islands in this Roblox incremental game with upgrades, prestige, mining, fishing, and more.

Not JJT Upgrade Tree is a Roblox incremental game where you increase numbers by traveling through over a dozen themed islands. The game features upgrades, prestige, challenges, mining, fishing, gambling, and unique elements like moss and the void.

It sits in the Idle / Prestige / Numbers / Mobile corner of the genre. Like most idle games it runs on a simple loop — earn, reinvest, automate — but the depth is in how long that loop keeps unfolding. Expect to check in, make a few decisions, and watch the numbers climb whether you're at the keyboard or not.

New to incrementals? Read our beginner's guide first, or just hit play — these games are built to teach themselves.