The Difficulty Upgrade Tree: Regrown Guide: Getting started on Island 1
About
OverviewThe Difficulty Upgrade Tree: Regrown (TDUT:R) is an extremely long obby game where you push through up to 134 upgrades across seven different areas, each with its own mechanics and progression. This guide walks you through getting started, understanding resets, reaching key upgrade milestones, and taking on bosses.
What is on this page
Contents
Getting started on Island 1
Step
The game drops you into a single room that you work through on your own — there is no co-op. The developers describe it as an extremely long game, so treat every early step as laying groundwork for a long grind ahead.
- Buy your first upgrade this is the condition for the Island 1 badge.
- Check your area seven areas exist in total, each with unique mechanics, though only one is available at the start.
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Key upgrade milestones
Table
Each milestone below unlocks something meaningful.
| Upgrade number | What it unlocks |
|---|---|
| 31 | Reach Island 2 and the Sakura island area |
| 60 | Unlock Multiplier Island (Islands of Multiplication) |
| 121 | Unlock Automation, letting you automate Class Negative |
| 134 | The current highest upgrade in the game |
| 135 | Island 4 unlock — not yet available |
Two types of reset
Table
Two distinct resets appear at different stages of the game. Both are tied to badge conditions, so you will need to perform each one to progress.
| Rest Reset (Layer 0) | take a rest and then continue forward; earns you the Mental Clarity badge |
| Perfection Reset (Layer 1) | resets your tree to grow it more perfectly; earns you the Perfecting Skills badge |
Boss fights
Step
Bosses appear at reset layers and in Act 1. The first one is framed as a practice battle to prepare you for protecting the tree.
- Face Flawless Noob this is the first Reset Layer boss; defeating him earns the Flawless Noob Beaten badge.
- Try Hardmode beating Flawless Noob with Hardmode enabled will earn a separate badge, though this is not yet available in the current version.
- Push into Act 1 a second boss appears later in Act 1, and defeating it earns the Ifinitude badge, also not yet available.
Things to watch out for
Warn
The game runs a content warning for flashing lights and rapid visual effects, and it places strict rules on how you are allowed to play.
Glossary
Glossary- Rest Reset
- A reset available at Layer 0 where you take a rest before continuing, required for the Mental Clarity badge.
- Perfection Reset
- A reset available at Layer 1 that refines your tree's growth and is required for the Perfecting Skills badge.
- Automation
- A feature unlocked at Upgrade 121 that handles Class Negative automatically for you.
- Multiplier Island
- An area unlocked at Upgrade 60, described as multiplying something in your progress.
- Flawless Noob
- The first Reset Layer boss, presented as a practice battle to prepare you for defending the tree.
- Class Negative
- A game element that can be automated once you reach Upgrade 121 and unlock the Automation feature.
Common questions
FAQCan I play this game with friends?
Each room fits only one player, so you progress entirely on your own. There is no co-op mode.
Is autoclicking allowed?
Yes, autoclicking is officially permitted. However, automating your cursor movement is not allowed, and using exploits or macros of any kind can get you caught.
How many upgrades are there?
The current highest upgrade is number 134. Certain numbers along the way — 31, 60, 121, and 135 — each unlock a new area or feature.
The game runs slowly on my device — what can I do?
The game is performance-intensive. Playing on a more powerful device is recommended.
Game updates can change what is on this page. If you spot something, get in touch and let us know.
