Mystery Keys value
MM2 TIER 3 Misc · 8th of 13 by value
Two listsMystery Keys on MM2 Values vs Supreme Values
from supremevalues.com, the other community list. Why they differ50% between the two lists means there is no settled price yet. Go carefully.
How much is Mystery Keys worth in MM2?
Mystery Keys sits at 2. There are 13 priced misc items and this is number 8. Line up all 1,079 priced items and it is number 543. Compare it with Box of Gold Papers, the tier leader at 4, or 2x this. A typical misc is worth 2. This one runs about the same as the normal price.
Mystery Keys has a source demand rating of 2/10 and a rarity rating of 3. These are community ratings, not measured sale times or guaranteed offers. Compare the actual items on both sides before accepting. Mystery Keys is marked "Stable" by the source list. This describes its current rating; it does not predict a future price.
To match Mystery Keys you want 2x Xeno Knife (1 each), or 5x Nuclear (0.4 each), or 10x Treats knife (0.2 each). Slot it next to Web (1) and Box of Fert (2). Those are your substitutes.
Fair offers for Mystery Keys
Stacks that come out close to even against Mystery Keys's 2.
| Offer | Each | Total |
|---|---|---|
| 2× Xeno Knife | 1 | 2 |
| 5× Nuclear | 0.4 | 2 |
| 10× Treats knife | 0.2 | 2 |
Counts are rounded, so each row sits within a few percent of the target. For exact figures use the trade calculator.
A quick word on misc items
The leftovers drawer.
If you are looking at this category hoping to find something valuable, you can stop. There is nothing here.
The only real use for this category is knowing what the odd item in your inventory actually is.
Items similar to Mystery Keys
Closest misc items by value. Useful for stacking or substituting in a trade.
StableBox of Green Papers
StableBox of Fert
StableBox of Purple Papers
StableBox of Blue Papers
StableBox of Red Papers
StableSkeleton Key
StableXmas Gifts
StableSnowflake Key
Mystery Keys: quick answers
How much is Mystery Keys worth in MM2?
Right now Mystery Keys is worth 2. That was true on October 2026 and it holds 8th place out of 13 misc items.
What can I trade for Mystery Keys?
Even swaps look like 2x Xeno Knife, 5x Nuclear, 10x Treats knife. Mix and match, as long as it comes to about 2. Run it past the calculator first.
Is Mystery Keys rare in MM2?
Rarity is rated 3 and demand 2, which puts it in the TIER 3 bracket of misc items. Plenty are out there, so supply is not what holds these trades up.
Is Mystery Keys worth more than Box of Fert?
No. Both Mystery Keys and Box of Fert have a listed value of 2. Neither side has a listed-value advantage; demand and the actual offer still matter.
Source list rebuilt October 6, 2026. The rebuild date describes the source list, not a confirmed change to this item's value. We check for new data regularly; listed values are guidance, not guaranteed offers. The notes above are written and kept up by the MM2 Values Team, and how we source and check everything is in our editorial policy.
MM2 values are player-driven trade units. They are not Robux and carry no real-world money value.
Background on how Mystery Keys was obtained and released: Mystery Keys on the Murder Mystery 2 Wiki