The Golden Acorn is a Prismatic-tier gear introduced with the Fall Market update on September 13, 2025. When used, it applies a random mutation to a pet and resets that pet’s age to 1. The item is currently obtainable during the Fall Market, though it’s marked as Limited and can rotate in and out of stock. This guide covers where to get it and how to use it safely and effectively.

Key facts

  • Tier: Prismatic.
  • Effect: Grants a random pet mutation and resets the pet’s age to 1. The target pet must be over Age 40.
  • Cost: 10,000,000,000 Sheckles (10 billion) or 239 Robux.
  • Availability: Fall Festival Gears Shop during the Fall Market; may be out of stock at times. Also has a small chance to drop when catching the Marmot pet.
  • Status: Currently obtainable; Limited item.
  • Date added: September 13, 2025.

Method 1: Buy from the Fall Festival Gears Shop

The primary way to get the Golden Acorn is via the Fall Festival Gears Shop found in the central Fall Market area. The gear is expensive and can require event progression before it appears for purchase.

Step 1: Travel to the Fall Market hub and open the Fall Festival Gears Shop. This shop sits at the center of the event area.

Step 2: Unlock the Golden Acorn by contributing to the Fall Bloom multiple times. Expect to submit requested plant types to the Fall Tree NPC; reports vary between 12 and 17 contributions depending on rotation. Plan for the higher number to avoid extra trips.

Step 3: Check stock and purchase the Golden Acorn. If available, buy it for 10 billion Sheckles. If you prefer, it can also be purchased for 239 Robux. If it’s out of stock, contribute to Fall Bloom again or check back after the next restock window.

Step 4: Confirm the item in your backpack. After purchase, open your inventory to ensure the Golden Acorn is present before you leave the area.

Method 2: Rare drop from the Marmot pet

There is a small chance to obtain the Golden Acorn by catching the Marmot pet. Treat this as a bonus path; it’s uncommon and not a reliable farm method.

Step 1: Locate and catch the Marmot pet during the event period. Use your usual pet-catching tools and approach.

Step 2: Check your inventory after the catch. If the Golden Acorn dropped, it will appear in your backpack; if not, continue with the shop method above.

How to use the Golden Acorn

Using the item is straightforward, but timing matters because your pet’s age will reset to 1 immediately after application.

Step 1: Pick the target pet and verify eligibility. The pet must be over Age 40. For safety, aim for Age 41+ to ensure the requirement is met.

Step 2: Equip the Golden Acorn from your backpack. Open your inventory and select the item to put it in hand.

Step 3: Stand close to the target pet until the highlight appears. Positioning matters; adjust your distance until the prompt shows you can apply the item.

Step 4: Apply the Golden Acorn. Use the standard interact input (left mouse button on PC) to trigger the mutation. The pet immediately receives a random mutation and its age resets to 1.

Step 5: Plan for re-leveling. Because age resets, you’ll need to raise the pet again. Schedule this around activities where a pet’s age matters so you don’t lose progress at a critical moment.

Practical notes and recommendations

The Golden Acorn applies mutations earlier than the typical mutation machine threshold, letting you test mutations once a pet crosses the Age 40 line. Because the result is random, choose pets where you’re comfortable rerolling outcomes. The 10 billion Sheckles price point is steep—consider saving for event restocks and keep a variety of plant types ready to fulfill Fall Bloom requests efficiently. If you encounter stock outages, check the shop after you contribute to Fall Bloom again.

The Golden Acorn streamlines pet mutation during the Fall Market—budget Sheckles, meet the Fall Bloom unlocks, and apply it when you’re ready to re-level the pet afterward.