CS2 Weapon Case
Prisma Case
Original Prisma case with rainbow refraction themes and Horizon Knives.
Drop Odds Breakdown
See how these odds play out in practice with our Case Simulator or calculate expected costs with the Case Odds Calculator.
| Rarity Tier | Chance | Items | Per-Item Odds |
|---|---|---|---|
| Special (Knife / Gloves) | 0.26% | 1 (knife/gloves) | — |
| Covert | 0.64% | 2 | 0.320% |
| Classified | 3.20% | 3 | 1.067% |
| Restricted | 15.98% | 5 | 3.196% |
| Mil-Spec | 79.92% | 7 | 11.417% |
Odds are Valve’s published container probabilities; each item within a tier is equally likely, so per-item odds are the tier chance divided by the number of items in that tier. StatTrak appears on roughly 10% of non-special drops. Souvenir and other container types can differ.
Expected Value Analysis
Not enough live prices to estimate this case's expected return — but 79.92% of openings land a Mil-Spec usually worth less than the key, so opening loses money on average
Chance of a Covert (red) or the rare special (knife/gloves) per opening
Case Contents
All 17 possible weapon skins in this case, grouped by rarity:
Covert (2 items)
Classified (3 items)
Restricted (5 items)
Mil-Spec (7 items)
Case Opening Tips
- Case opening has negative expected value on average — try the Case Simulator risk-free first
- Invest in skins you love rather than opening for profit
- Consider float quality and condition when valuing items — use the Float Checker to analyse wear values
- StatTrak and Souvenir variants are rarer and more valuable
- Check live prices with the Price Tracker and Market Trends before buying
- Keep keys on secure accounts and enable Steam Guard
- Use the Skin Compare tool to compare similar skins before choosing
- Use the Trade-Up Calculator for better ROI than opening cases
- Check your current inventory value with the Inventory Lookup
Frequently Asked Questions
- What are the odds of getting a knife from the Prisma Case?
- The odds of pulling the rare special item (a knife) from the Prisma Case are 0.26% per opening — Valve's published rate for the gold "Rare Special Item" tier. Across 100 openings you have roughly a 22.9% chance of hitting at least one, so expect to open around 385 cases on average before a knife drops.
- What are the drop rates for the Prisma Case?
- Prisma Case uses Valve's standard weapon-case odds: Mil-Spec 79.92%, Restricted 15.98%, Classified 3.20%, Covert 0.64%, and the special knife/gloves tier 0.26%. Within each tier every skin is equally likely.
- What is the chance of a Covert from the Prisma Case?
- Any Covert (red) skin drops at 0.64% per opening. With 2 Covert skin(s) in this case, each specific Covert has about a 0.320% chance of being the one you unbox.
- Is opening the Prisma Case worth it?
- On expected value, no. A key costs $1.70 and around 79.92% of openings return a low-value Mil-Spec skin, so the average opening loses money. High-value pulls are rare (Covert 0.64%, knife/gloves 0.26%). Most players open cases for skins they want rather than profit.