Undefined
In-game description
“It's too dark in here...”— Sol's RNG (as quoted on the wiki)
How many rolls Undefined takes
| Your luck | Expected rolls |
|---|---|
| 1× | 1,111,000 |
| 2× | 555,500 |
| 5× | 222,200 |
| 10× | 111,100 |
| 100× | 11,110 |
Expected rolls = N ÷ luck. Each roll is independent, so it can take far more or far fewer. Open in the calculator →
Aura facts
Rarity
1/1.11M
Tier
Mythic
Biome
Null, The Limbo
Biome-native
Added in
Before the In-Dev Updates
Inside Null, The Limbo the wiki lists: 1 in 1,111
Null appears with 1 in 10,100 every second and lasts 99 seconds (1 minute 39 seconds). Biome details →
Credited on the wiki to: ep1k_sol
About Undefined
Undefined is one of the few Mythic auras where a biome changes the odds from rare to routine. Outside, it is 1 in 1,111,000; inside Null or The Limbo it drops to 1 in 1,111, a thousand times better. With a 10x potion that is roughly 111 rolls in those biomes against 111,100 without. It dates to before the In-Dev updates and is credited to ep1k_sol.
The Sol's RNG Wiki describes a large black X that shakes over the player's face, with a black aura pouring from behind the torso and fading to white as it spreads. Below sits a portal-like effect, white at the center and turning black outward, throwing off black and white particles in many sizes. Looking closely, white butterflies surround the player, and white lines frame the portal. The character also has its own stooped, forward-leaning stand and walk animations.
Do not confuse it with Defined, which the wiki treats as a separate aura. Its counterpart is the April Fools 2024 entry listed here as Undefined : Defined.
Related forms
Auras with similar odds (Mythic)
Frequently asked questions
How rare is Undefined in Sol's RNG?
The Sol's RNG Wiki lists Undefined at 1 in 1,111,000, in the Mythic tier. With base luck that averages 1,111,000 rolls; with 10× luck, about 111,100.
Can you still get Undefined?
Yes. The wiki lists it as obtainable, and it is tied to the Null, The Limbo biome.
Data taken from the Sol's RNG Wiki (CC BY-SA), organized with AI assistance; nothing here is tested in the game; wiki read on 2026-10-24.