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Trading and values guide

Trading in Bubble Gum Simulator Infinity unlocks after 2,000 hatched eggs, and everything is priced in gems. This guide explains where the numbers on our values page come from, why two honest lists can disagree by thousands of gems on the same pet, and how to protect yourself in a market with no official prices.

There is no official price for anything

Rumble Studios does not publish trade values. Every value list is a community estimate built from watching trades happen, and lists are updated by hand at different speeds. The result, measured while building this section: King Doggy was listed at 8,000 gems in April 2025, 5,000 in June 2025 and 6,500 in July 2025 by three different lists, and three pets on our current list still carry figures that disagree by more than three times between the freshest list and the July 2025 list. None of those lists is lying. The market moved, and the lists moved at different times. Treat every value, including ours, as a dated estimate: useful for spotting a bad trade, useless as a guarantee.

Forms multiply value

Most pets can hatch as Shiny, and many have Mythic and Shiny Mythic forms. The forms are not small premiums. On the current list a normal Dementor sits at 36,500 gems while high-form pets like a Mythic Avernus reach 75,600. When you check a pet here, check the exact form: the values page lists each form as its own row, and the calculator totals the form you actually pick. A trade that looks fair for the normal pet can be a heavy loss if the pet in the window is a Shiny Mythic.

Demand is the second number

Two pets at the same value are not equally tradable. Demand scores (shown on the values page where the source publishes them) estimate how many traders want the pet. A high-demand pet at a fair price moves in minutes; a low-demand pet at the same paper value may need a discount to move at all. In a close trade, take the side with the higher demand unless you specifically want the pet being offered.

Check every trade in the calculator

Before accepting anything beyond a swap of commons, run it through the WFL calculator. It totals both sides from the same checked values as the values page and calls the trade Win, Fair or Lose with a 10% fair band, and suggests a pet that would close a gap. Then apply the habits that catch what no calculator can: read every name in the trade window letter by letter, because lookalike pets and forms are the oldest trick in this game's trading; never trade in two steps or accept an IOU for the second half; and never hand over a pet first on a promise. If a trader rushes you, that is the answer: close the window.

Selling your own hatches

Limited pets from finished events are the steadiest earners, because no new supply can ever hatch. Current-event Secrets are the opposite: their values usually sag as more players hatch them, so sell early or hold for the long term, not the middle. And keep perspective on the unpriced majority: most of the 2,165 pets in the game appear on no value list at all, because they change hands for a gem or two. Absence from the values page means no list prices the pet, not that the pet is rare.