Game guide

Undertale RNG Guide: Getting started

[PVE FIGHTS] Undertale RNG

The Project Soul Team, Playing 44, Rating 75.2%

Creator The Project Soul Team

Playing 44

Rating 75.2%

See the game page Open on Roblox

Is this game fun?

No votes yet. Cast the first one.

About

Overview

Undertale RNG is a Roblox action and collection game built around the worlds of Undertale and Deltarune. You roll for random auras and abilities, then take them into PVE boss fights across areas like Snowdin and Castletown.

See the game page Open on Roblox

What is on this page

Contents

01 Getting started — tutorial and first rolls Step 02 Roll milestones worth knowing Summary 03 Boss fights and no-hit runs Tips 04 Bosses available and their badges Table 05 Obbies and extra challenges Check 06 Group membership and key binds Table 07 Glossary Words 08 Common questions FAQ

Getting started — tutorial and first rolls

Step

In short Finishing the tutorial and rolling early are the two things that set the rest of your progress in motion.

Before anything else, clear the tutorial. Earning the 'Wow I beat the tutorial :3' badge is your signal that you understand the basics and are ready to move on. After that, your main loop is rolling for auras and abilities, then bringing them into PVE fights.

Clear the tutorial to earn the 'Wow I beat the tutorial :3' badge.
Use V to activate your ability during a fight.
Head to Snowdin or Castletown these are the areas where PVE fights are available.
Play on max graphics the game recommends this setting.

Ask on the board

Roll milestones worth knowing

Summary

In short Three roll counts unlock badges, giving you long-term targets to aim for while you build your aura collection.

Rolling is random every time. There are more than 100 auras in the game, and badges mark your progress at three specific totals.

1,000 rolls　first milestone badge unlocks here.
10,000 rolls　second milestone badge unlocks here.
100,000 rolls　third and final roll milestone badge unlocks here.

Boss fights and no-hit runs

Tips

In short A time limit exists during boss fights, and taking no damage earns a separate no-hit badge.

PVE fights each have two tiers of reward: a standard clear badge and a harder no-hit badge for finishing without taking any damage. A time limit also applies — drag a fight out too long and you trigger the 'Your taking too long!' badge.

Tips worth knowing

Keep pressure on the boss so the fight ends before the timer becomes a problem.
Press V whenever your ability is ready.

Bosses available and their badges

Table

In short Several bosses each have a standard clear badge and a separate no-hit badge, so each one is worth fighting twice.

The table below lists the bosses confirmed by badge data, along with what each badge requires. Spare is a separate action from defeating — for Code Name Sticky you can choose to let it go instead of finishing it off.

Boss	Standard clear badge	No-hit badge	Other badge
Code Name Sticky	Kill Code Name Sticky	No hit Code Name Sticky	Spare Sticky (spare instead of killing)
Code Name Light	Cause the evil to run away	No hit Code Name Light	—
Maxwell	Beat Maxwell	No hitted Maxwell	—
General Winter	Defeat General Winters	No hit General Winter	—
Evil Duck	Evil duck (defeated Evil Duck)	—	Summer Event 2026

Obbies and extra challenges

Check

In short Two obbies and a hotdog collection run alongside the boss content.

Outside of boss fights there are obstacle courses and a small collection goal.

Finish the Easy Obby for its own completion badge.
Finish the Medium Difficulty Obby for its own completion badge.
Collect 30 hotdogs to earn the 'Obtain 30 hotdogs' badge the game notes thirty is the cap.

Group membership and key binds

Table

In short Joining the official group gives you a visible chat title in-game, plus easy access to update news.

Two small things are worth setting up before you spend serious time in the game.

Official group	joining adds a chat title next to your name in-game and puts update announcements in your feed.
V key	activates your current ability during a fight, no extra purchase needed.
B key	spawns a Niko Ball, but this requires owning the relevant gamepass.

Community strategy ideas

Community

These ideas and tips come from people playing the game. Share your discoveries too!

No strategy ideas yet. Share a tip you discovered.

Glossary

RNG: Short for random number generation — every roll you make picks a result at random.
PVE: Player versus Environment — you fight computer-controlled enemies rather than other players.
Aura: A visual effect attached to your character; there are over 100 in the game and you collect them through rolling.
Spare: An Undertale-style option that lets you end an encounter without defeating the enemy — available for Code Name Sticky and rewarded with its own badge.
No-hit: Clearing a boss fight without taking any damage; several bosses have a dedicated badge for pulling this off.
Boss Raid: A co-op event where all participating players must work together to defeat a boss, with the completion badge going to everyone upon a global clear.

Common questions

FAQ

How do I get auras?

Roll — the outcome is random every time. There are more than 100 auras in the game.

What happens if a boss fight goes on too long?

The game triggers the 'Your taking too long!' badge.

Can I earn the boss raid badge by myself?

No — the badge is awarded only on a global completion, meaning the whole server has to finish the raid together.

What is the difference between killing and sparing Code Name Sticky?

Killing it earns the standard defeat badge and a separate no-hit badge if you take no damage. Sparing it earns a different badge called Spare Sticky.

Updated Oct 31, 2026
Game updates can change what is on this page. If you spot something, get in touch and let us know.

[PVE FIGHTS] Undertale RNG The Project Soul Team, Playing 44, Rating 75.2%

See the game page Ask on the board