CS2 Case Guide
Which CS2 Cases Drop the Butterfly Knife?
5 CS2 cases can drop a Butterfly Knife as the Rare Special Item. Every gold pull has a 0.26% drop rate — here's every case that can pay out, newest first.
All Butterfly Knife Cases
| Case | Released | Knife Pool |
|---|---|---|
| Dreams & Nightmares Case | January 2022 | Bowie Knife, Butterfly Knife, Falchion Knife, Huntsman Knife, Shadow Daggers |
| Operation Riptide Case | September 2021 | Bowie Knife, Butterfly Knife, Falchion Knife, Huntsman Knife, Shadow Daggers |
| Spectrum 2 Case | September 2017 | Bowie Knife, Butterfly Knife, Falchion Knife, Huntsman Knife, Shadow Daggers |
| Spectrum Case | March 2017 | Bowie Knife, Butterfly Knife, Falchion Knife, Huntsman Knife, Shadow Daggers |
| Operation Breakout Weapon Case | July 2014 | Butterfly Knife |
Want the exact math on a pull? Run the numbers in the case odds calculator, or browse every Butterfly Knife finish with live prices on the Butterfly Knife page.
Frequently Asked Questions
Which CS2 cases contain the Butterfly Knife?
5 cases can drop a Butterfly Knife as their Rare Special Item: Dreams & Nightmares Case, Operation Riptide Case, Spectrum 2 Case, Spectrum Case, Operation Breakout Weapon Case. Every one is listed above with release dates and links to full contents.
What are the odds of unboxing a Butterfly Knife?
The Rare Special Item (gold) tier drops at 0.26% per case opening — about 1 in 385 cases. Which specific knife and finish you get within that tier is a further random roll across the case's knife pool.
Is it cheaper to unbox or buy a Butterfly Knife?
Buying is almost always cheaper: at 0.26% odds you'd open hundreds of cases on average (keys cost $2.50 each), while Butterfly Knife finishes currently start at $450.44 on the market. Unbox for the thrill, buy for the value.
Can you trade up to a Butterfly Knife?
Since the October 2025 update, Covert-tier trade-up contracts can output knives from eligible cases, which added a second route to knife ownership beyond unboxing and buying. See our trade-up calculator for how contract outcomes work.
Cases by Knife Type
Bayonet Cases · Bowie Knife Cases · Classic Knife Cases · Falchion Knife Cases · Flip Knife Cases · Gut Knife Cases · Huntsman Knife Cases · Karambit Cases · Kukri Knife Cases · M9 Bayonet Cases · Navaja Knife Cases · Nomad Knife Cases · Paracord Knife Cases · Shadow Daggers Cases · Skeleton Knife Cases · Stiletto Knife Cases · Survival Knife Cases · Talon Knife Cases · Ursus Knife Cases · Glove Cases