SCROOMS: Acornub Rarity, Frequency Range, and How to Catch It

Acornub is one of the first creatures you can track down in SCROOMS, the Roblox game where you catch mushroom-like creatures by playing an instrument. It sits early in your Index and is caught with the same rhythm routine every scroom uses, so it is a clean one to learn the system on.

Quick answer: Acornub is an Uncommon scroom found in Songkeeper’s Grove. Its frequency runs from 37.5 Hz to 62.5 Hz. Play your instrument near it, tune to the white dot, and hold it in the catch zone until the bar fills.

Acornub rarity and Index entry

Acornub is an Uncommon scroom, and its Index page is headed “Uncommon Scroom.” You will find it in Songkeeper’s Grove, the starting area, listed as entry number 5 of 15 on that page. Its flavour line reads: it will grow into a big tree someday.

The printed frequency range on the entry is 37.5 Hz – 62.5 Hz. Every Acornub you catch arrives with its own frequency somewhere inside that band, shown on its backpack card and in the catch message. A catch can come in at 53 Hz.

Acornub selected in the Songkeeper's Grove Index showing its frequency range, stats, and uncaught tones — The Index open to Songkeeper’s Grove with Acornub selected, showing its Uncommon rarity, frequency range, stats, and three uncaught tones.

The same page also tracks Stats and Tones. Stats carries your Highest Frequency, meaning the best one you have caught so far, plus the date caught. Tones lists three lines, Melodic, Harmonic, and Resonant, each showing a catch date or “Uncaught.”

Where to find Acornub

Songkeeper’s Grove is where the game starts. Look for Acornub on the grass near the spawn sign, within the group of red wooden houses. You can’t control which scroom responds to your song.

Acornub shares the Uncommon tier in Songkeeper’s Grove with three other creatures. If you are filling out the page, these are the ones at the same rarity:

Mistdrop
Sunbrella
Bloomcap

How to catch Acornub

Hold your instrument from slot 1 and click to play it near the scroom. This starts the catch.

Click again on the ring when it appears to begin tuning.

Keep the pin on the white dot while you tune, matching the pitch the scroom gives off.

Hold the scroom inside the sliding catch zone on the track. Staying in the zone fills the bar underneath. Once that bar is full, the catch lands.

A card you have not caught shows a black silhouette labelled “???” in the Index. Catching a single Acornub fills that card in.

How you know the catch worked

When the bar fills, a message prints on screen reading “You caught: Acornub!” followed by its frequency in Hz. The creature also lands in your backpack as a numbered slot. After that, the Acornub card in the Index flips from the “???” silhouette to the full entry with its flavour line, stats, and tone lines.

On-screen notification reading You caught Acornub at 53 Hz with Acornub added to the hotbar — The catch confirmation on screen, announcing an Acornub caught at 53 Hz with the creature now sitting in the hotbar.

Tones: Melodic, Harmonic, and Resonant

Tones are versions of the same scroom, marked by a prefix on the name. You might catch a “Melodic Acornub” or a “Harmonic Acornub,” and a single scroom can carry two at once, such as a “Melodic Harmonic Acornub.” On the Index card, a gold star means Melodic has been caught and a cyan star means Harmonic.

Each tone tracks its own catch date on the Acornub page, so a standard catch does not tick off the tone lines. You chase those separately until all three show a date instead of “Uncaught.”