Mystery Key is a Common item in Murder Mystery 2, obtained from buying from the shop for 125 Diamonds. Its combined value is 1.5, #5 of 9 misc items and #546 of 921 valued items overall. Demand is low: it sits in inventories for a while, and buyers often ask for a discount. The value went up 50% over the last 7 days.
Closest in value: Aurora (2019) (1.5), Ghost (2018) (1.5), Icecracker (1.5). Use them as a benchmark for a fair one-for-one trade.
Value history
What it is worth in other items
1×Aurora (2019)
1×Ghost (2018)
1×Icecracker
1×Lights (2019)
1×Moonlight
1×Red Fire
1×Vampire (2016)
1×Vampire (2018)How many of each item equal one Mystery Key by value. Demand differs between items, so check it before you trade.
Questions players ask
How much is Mystery Key worth in MM2?
Mystery Key has a combined value of 1.5 as of October 2026. Value is the trading rate between players, not a Robux price.
How do you get Mystery Key?
From buying from the shop for 125 Diamonds. If it no longer drops, trading with other players is the only way.
Which is worth more, Mystery Key or Aurora (2019)?
Mystery Key is 1.5, Aurora (2019) is 1.5. Mystery Key is worth more; compare demand before you trade.
Is Mystery Key rare?
Mystery Key is a Common item.