Which CS2 case has the best opening odds (highest return)?

Chroma 3 Case currently has the highest expected return - about 42% of its open cost - though, like every case, it's still −EV (you lose money on average over many opens).

Are CS2 cases profitable to open?

No. Every weapon case returns well under 100% of its cost on average - typically 15-45% - because the case price plus the $2.50 key far exceeds the average value of what you unbox. Opening cases is gambling, not investing.

How is a case's expected value calculated?

For each rarity grade we take Valve's published drop odds times the average live market price of that grade's skins, add the 0.26% rare knife/glove special, then divide by the case price plus the $2.50 key. It uses each skin's lowest-float price, so it's a conservative floor.

Best CS2 Cases to Open

Every CS2 weapon case ranked by expected value - the average worth of a single open (from live skin prices × Valve's drop odds) versus the case + $2.50 key cost. Higher return = less bad odds, but every case is still −EV: you lose money on average over many opens.

1 Chroma 3 Case EV/open$2.31 Cost$5.54 Return42%
2 Chroma 2 Case EV/open$2.50 Cost$5.90 Return42%
3 Gamma Case EV/open$2.24 Cost$5.50 Return41%
4 Chroma Case EV/open$2.80 Cost$7.00 Return40%
5 Operation Vanguard Weapon Case EV/open$3.03 Cost$7.79 Return39%
6 Prisma Case EV/open$1.46 Cost$3.75 Return39%
7 CS:GO Weapon Case 3 EV/open$5.61 Cost$14.52 Return39%
8 Operation Breakout Weapon Case EV/open$3.95 Cost$10.12 Return39%
9 Spectrum Case EV/open$2.29 Cost$5.97 Return38%
10 Operation Phoenix Weapon Case EV/open$2.35 Cost$6.18 Return38%
11 eSports 2013 Winter Case EV/open$8.38 Cost$22.05 Return38%
12 Gamma 2 Case EV/open$2.10 Cost$5.56 Return38%
13 CS:GO Weapon Case 2 EV/open$9.59 Cost$25.52 Return38%
14 Revolver Case EV/open$1.89 Cost$5.15 Return37%
15 Prisma 2 Case EV/open$1.34 Cost$3.75 Return36%
16 Spectrum 2 Case EV/open$1.89 Cost$5.24 Return36%
17 Winter Offensive Weapon Case EV/open$4.46 Cost$12.34 Return36%
18 Operation Wildfire Case EV/open$1.90 Cost$5.66 Return34%
19 Dreams & Nightmares Case EV/open$1.23 Cost$3.72 Return33%
20 Horizon Case EV/open$1.24 Cost$3.88 Return32%
21 eSports 2014 Summer Case EV/open$5.20 Cost$16.64 Return31%
22 Sealed Dead Hand Terminal EV/open$1.08 Cost$3.50 Return31%
23 Fever Case EV/open$0.94 Cost$3.09 Return31%
24 Huntsman Weapon Case EV/open$3.31 Cost$10.63 Return31%
25 Falchion Case EV/open$1.21 Cost$4.05 Return30%
26 Shadow Case EV/open$1.23 Cost$4.14 Return30%
27 Operation Hydra Case EV/open$10.25 Cost$34.20 Return30%
28 Operation Broken Fang Case EV/open$2.46 Cost$8.62 Return28%
29 Snakebite Case EV/open$0.85 Cost$3.01 Return28%
30 Danger Zone Case EV/open$1.03 Cost$3.71 Return28%
31 CS:GO Weapon Case EV/open$34.06 Cost$125.50 Return27%
32 Shattered Web Case EV/open$1.98 Cost$7.98 Return25%
33 Gallery Case EV/open$0.81 Cost$3.37 Return24%
34 Operation Bravo Case EV/open$15.21 Cost$63.64 Return24%
35 CS20 Case EV/open$0.88 Cost$3.60 Return24%
36 Fracture Case EV/open$0.73 Cost$3.02 Return24%
37 Recoil Case EV/open$0.64 Cost$2.82 Return23%
38 Kilowatt Case EV/open$0.59 Cost$2.66 Return22%
39 Operation Riptide Case EV/open$2.66 Cost$12.37 Return22%
40 Clutch Case EV/open$0.65 Cost$3.07 Return21%
41 Revolution Case EV/open$0.57 Cost$2.75 Return21%
42 eSports 2013 Case EV/open$9.59 Cost$55.68 Return17%
43 Glove Case EV/open$2.75 Cost$17.76 Return15%

How this ranking works

For each case we compute the expected value of one open: every rarity grade's published drop odds × the average live price of that grade's skins, plus the 0.26% chance of the rare knife/glove special, all divided by the case price plus the $2.50 key. We use each skin's lowest-float price, so the figure is a conservative floor. Souvenir packages and sticker/autograph capsules are excluded - they aren't key-opened cases. Want to try your luck risk-free? Every case page has a free opening simulator using these same odds and prices.