CS2 Case Guide

Which CS2 Cases Drop the Ursus Knife?

4 CS2 cases can drop a Ursus 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.

Cases

0.26%

Gold Odds

$52.95

Buy Instead From

All Ursus Knife Cases

Case	Released	Knife Pool
Prisma 2 Case	April 2020	Navaja Knife, Stiletto Knife, Talon Knife, Ursus Knife
Prisma Case	March 2019	Navaja Knife, Stiletto Knife, Talon Knife, Ursus Knife
Danger Zone Case	December 2018	Navaja Knife, Stiletto Knife, Talon Knife, Ursus Knife
Horizon Case	August 2018	Navaja Knife, Stiletto Knife, Talon Knife, Ursus Knife

Want the exact math on a pull? Run the numbers in the case odds calculator, or browse every Ursus Knife finish with live prices on the Ursus Knife page.

Frequently Asked Questions

Which CS2 cases contain the Ursus Knife?

4 cases can drop a Ursus Knife as their Rare Special Item: Prisma 2 Case, Prisma Case, Danger Zone Case, Horizon Case. Every one is listed above with release dates and links to full contents.

What are the odds of unboxing a Ursus 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 Ursus Knife?

Buying is almost always cheaper: at 0.26% odds you'd open hundreds of cases on average (keys cost $2.50 each), while Ursus Knife finishes currently start at $52.95 on the market. Unbox for the thrill, buy for the value.

Can you trade up to a Ursus 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.