Case comparison
Prisma Case vs Chroma 2 Case
Cost, modeled expected return and ROI, gold odds and pool contents for both cases, using a Steam Community Market snapshot dated Oct 27, 2026, 10:25 AM UTC.
 Prisma Case |  Chroma 2 Case | |
|---|---|---|
| Released | 2019-03-05 | — |
| Case price | $2.17 | $5.54 |
| Key price | $16.04 | $15.90 |
| Total open cost | $18.21 | $21.44 |
| Expected return | $3.16 | $4.67 |
| Modeled ROI | 17.4% | 21.8% |
| Gold odds | 0.256% · 1 in 391 | 0.256% · 1 in 391 |
| P(knife) | 0.256% | 0.256% |
| P(gloves) | — | — |
| Rare-special items | 52 (52 knife · 0 glove) | 60 (60 knife · 0 glove) |
| Knife / glove families | Navaja Knife, Stiletto Knife, Talon Knife, Ursus Knife | Bayonet, Flip Knife, Gut Knife, Karambit, M9 Bayonet |
| Mil-Spec skins | 7 | 6 |
| Restricted skins | 5 | 4 |
| Classified skins | 3 | 3 |
| Covert skins | 2 | 2 |
| Highest-priced outcome | StatTrak™ ★ Talon Knife | Doppler (Minimal Wear) — $1,865.47 | StatTrak™ ★ Karambit | Doppler (Factory New) — $1,735.26 |
What the numbers show
- Based on DropLabz's current price snapshot, Chroma 2 Case has the higher modeled ROI (21.8% vs 17.4%). Both are below 100%, meaning each has a negative modeled expected value.
- Chroma 2 Case also has the higher modeled expected return per opening ($4.67 vs $3.16).
- Prisma Case costs less to open: $18.21 (case + key) against $21.44 for Chroma 2 Case.
- Both have the same gold (rare-special) chance, 0.256% (1 in 391), since both carry the same rarity tiers.
- Both rare-special pools contain knives only; Prisma Case has 52 items and Chroma 2 Case has 60.
- Chroma 2 Case has the better knife odds (0.256% vs 0.256%).
This is a description of modeled figures, not a recommendation. ROI is expected return ÷ opening cost under DropLabz's rarity model (equal weighting within each tier, 10% StatTrak on eligible skins); unpriced outcomes are excluded from expected return. Prices come from a snapshot dated Oct 27, 2026, 10:25 AM UTC.
Prisma Case
Chroma 2 Case
See every case ranked on Case ROI, the rarity math on CS2 case odds, knife chances on CS2 knife odds, or other case comparisons.