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Free Chroma Case opening simulator: $7.20 open cost, $5.64 EV, -21.61% Unbox ROI, 74 drops across 4 rarities. Test odds, history and win rate without spending keys. Updated June 3, 2026. Research and entertainment only.
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Chroma Case
Simulate Chroma Case opens at $7.20 ($4.71 case + $2.49 key) without spending real money. Compare runs to $5.64 EV and -21.61% Unbox ROI from the Details tab.
The Chroma Case simulator rolls 74 outcomes across 4 rarities at $7.20 per open, tracking session win rate against $5.64 EV.
Sessions deviate from $5.64 EV and 6.00% profit chance — that variance is the point. Lucky sims do not prove $7.20 opens are +EV.
Hold Chroma Case at $4.71 with 0.00% Investing ROI on Details; simulate opens at -21.61% Unbox ROI here — different intents.
CSProfit models Chroma Case at $5.64 EV — faster than real opens, not a profit promise.
It rolls 74 Chroma Case drops using the same weights as Details, values each hit at current prices and charges $7.20 per simulated open against $5.64 EV.
★ Bayonet | Doppler is 0.00% (about 1 in 23256). ★ M9 Bayonet | Doppler, ★ Karambit | Doppler, ★ M9 Bayonet | Doppler lead average value; common tiers dominate the 74-item pool across 4 rarities.
Yes — virtual opens use the $7.20 modeled cost ($4.71 + $2.49) without charging your Steam wallet.
Detail EV is $5.64 (-$1.56 vs $7.20 open). Individual sims often land below that because commons dominate 6.00% profit chance.
It uses CSProfit's 74-item probability table for Chroma Case (updated June 3, 2026). It models randomness but is not Valve's server-side roll.
Modeled exp. profit is -$1.56 on $7.20 opens with -21.61% Unbox ROI. Most single opens still return items worth less than cost.
Click Open Once ($7.20 modeled) or Quick Sim for bulk runs. Compare history to $5.64 EV and 6.00% win benchmark.
You can hit ★ M9 Bayonet | Doppler ($7,631.49 avg.) in sim, but 0.00% rare drops remain unlikely. Session wins ≠ -21.61% long-run ROI.
Run 50+ Quick Sims, chart rarity distribution and compare win rate to 6.00% and EV to $5.64 — one lucky streak is noise.
The web tool is free. Real Chroma Case opens still cost $7.20 (USD) on Steam if you choose to open for real.