OP17 Case Mapping Calculator
Set your case count, click each opened box, and tick what it held. Everything recalculates live. The Odds / sealed box column is the chance a box you have not opened yet holds at least one of that hit, given what is already gone from the case.
Click a box to open it, then tick what it held. Boxes you leave untouched are still sealed — the odds below are for those.
Select a box above to record its hits.
| Hit type | Odds / sealed box | Expected total | Found | Left in case | Avg / box |
|---|---|---|---|---|---|
| Alt-Art LeaderReliable | 29%base 29% | 4 | 0 | 4 | 0.3 |
| Secret Rare (SEC)Reliable | 35%base 35% | 5 | 0 | 5 | 0.4 |
| Alt Art / ParallelReliable | 58%base 58% | 10 | 0 | 10 | 0.8 |
| Gold DON!!Reliable | 8.3%base 8.3% | 1 | 0 | 1 | 0.1 |
| Panda Man Alt ArtReliable | 46%base 46% | 7 | 0 | 7 | 0.6 |
| Platinum (Diamond) DON!!Lottery | 8.3%base 8.3% | 1 | 0 | 1 | 0.1 |
| Gold Special Art (SP)Lottery | 16%base 16% | 2 | 0 | 2 | 0.2 |
| Treasure Rare (TR)Lottery | 8.3%base 8.3% | 1 | 0 | 1 | 0.1 |
| Manga Special ArtLottery | 4.3%base 4.3% | 0.5 | 0 | 0.5 | 0 |
| Pirates Crew Alt Art (grail)Lottery | 2.6%base 2.6% | 0.3 | 0 | 0.3 | 0 |
Estimates only. OP17 has no fixed hit map — hits land 1–4 per box at random, so a case yields these counts on average with heavy variance. Odds treat the per-case totals as a soft pool spread across the sealed boxes; a real case can over- or under-shoot. Not affiliated with Bandai.
Does OP17 Have a Case Map?
Not a fixed one — and that is the single most important thing to understand before you try to “map” an OP17 case. Older One Piece sets guaranteed a set number and position of hits per box, so the community could publish a literal case map: box 1 holds the SEC, box 7 holds the leader, and so on. OP17 removed that. The premium hits — alt arts, Secret Rares, Gold SPs, mangas, and the Gold and Platinum (Diamond) DON!! — are distributed randomly, so one box can deliver four hits while the next delivers one.
What survives is the case-level average. Across 1,000+ packs (three full cases plus additional boxes), a case reliably converges on the budget in the table below. That is why “case mapping” for OP17 is really conditional odds, not a fixed chart: as boxes come out of a case, the remaining hits have fewer boxes to hide in, so the odds on each sealed box shift. The calculator models exactly that.
Average Pulls Per Case (All the Usual Hits)
These are the same community aggregates behind our OP17 pull rates page, expressed as a per-case budget. The Reliable tier shows up in essentially every case; the Lottery tier is a genuine chase that can skip a case entirely.
| Hit Type | Avg / Case | Tier | Notes |
|---|---|---|---|
| Alt-Art Leader | 4 per case | Reliable | Kaido, Shanks, Charlotte Linlin, Edward Newgate — the reliable premium tier, roughly one per 3 boxes. |
| Secret Rare (SEC) | 5 per case | Reliable | Loki SEC dominates — one case produced five different Lokis. About one per 2–3 boxes. |
| Alt Art / Parallel | 10 per case | Reliable | The mid-tier chases most openers walk away with — Nico Robin, Rocks, Beckman, recurring Loki. 0–3 per box. |
| Gold DON!! | 1 per case | Reliable | Premium gold DON!! finish; a case typically holds one Gold plus one Platinum. |
| Panda Man Alt Art | 7 per case | Reliable | Six star-stamped 2K vanilla secrets; ~6–8 per case but NOT one-per-box — some boxes had none, some two. ~$2 each. |
| Platinum (Diamond) DON!! | 1 per case | Lottery | The Diamond DON!! — ~$850 at pre-release and roughly one per case. The case-opening showstopper. |
| Gold Special Art (SP) | 2 per case | Lottery | Gold hockey SPs (D. Roger, Yamato, Buggy, Shanks); ~2 per case, but one full case missed its second entirely. |
| Treasure Rare (TR) | 1 per case | Lottery | A genuinely playable Edward Newgate TR; ~1 per case and not guaranteed. |
| Manga Special Art | ~0.5 per case | Lottery | Four Emperors mangas (Whitebeard, Big Mom, Kaido, Shanks) — the rarest tier, skips most cases entirely. |
| Pirates Crew Alt Art (grail) | ~0.3 per case | Lottery | The Luffy / Rocks grail — ~$6,000 in Japan. Most full cases in the sample did NOT contain one. |
Totals are averages with heavy variance — a full case landed roughly 16 hits + 6 DON!! ≈ 22, or about 30 counting Panda Man. The manga specials, Gold hockey SPs, Treasure Rare and the Pirates Crew grail are not guaranteed in any given case.
How the Odds Are Calculated
The model is deliberately simple and honest. For each hit type it takes the per-case average (for example, 4 alt-art leaders), multiplies by your number of cases, and subtracts everything you have already recorded to get the hits left in the case. Those remaining hits are then spread across the boxes you have not opened, and the tool reports the chance a given sealed box holds at least one.
- Odds / sealed box — the conditional chance for a box you have not opened yet, after accounting for what is gone.
- base (grey) — the flat rate you would expect from a fresh, untouched box if hits were purely random. Compare the two to see how much the opened boxes have moved your odds.
- Avg / box — expected number of that hit still sitting in each sealed box.
Two honest caveats. First, because OP17 has no fixed map, these are estimates around a case average — a real case can over- or under-shoot, so treat a rising number as “better odds,” not a guarantee. Second, once you have recorded as many of a hit as the case averages, the pool shows as exhausted — but a lucky case can still overspill, which is genuine bonus territory rather than an impossibility.
Frequently Asked Questions
Does OP17 have a case map?
Not a fixed one. OP17 dropped the fixed hit mapping that older sets used, so hits land 1 to 4 per box at random. What holds is the case average — about 4 alt-art leaders, ~5 SEC, ~2 special DON!! and ~22 hits per 12-box case. The calculator uses those averages as a soft pool and recomputes each sealed box’s odds as you record what has been opened.
How does the OP17 case mapping calculator work?
Pick your case count, click each opened box, and tick what it held. The per-case totals are treated as a pool; every hit you record is subtracted, and the remainder is spread across your sealed boxes. Each box then shows the chance it holds at least one of a given hit, alongside the flat base rate for a random box.
What are the odds of a Diamond (Platinum) DON!! per box?
The Platinum DON!! — the Diamond DON!! — lands roughly once per case, so a single untouched box is about an 8% chance. If a case still has its Platinum DON!! unaccounted for and only a few sealed boxes remain, mark off the opened boxes and the per-box odds climb sharply.
How many hits are in an OP17 case?
A full case (12 boxes, 288 packs) averages about 22 hits — roughly 16 hits plus 6 DON!!, or about 30 counting Panda Man. That breaks down to ~4 alt-art leaders, ~5 SEC, ~10 alt-art/parallels, ~6–8 Panda Man, and ~2 special DON!!, with the mangas, Gold SPs, Treasure Rare and Pirates Crew grail as unguaranteed extras.
Disclaimer: All odds are estimates. OP17 has no fixed hit map — community aggregates (1,000+ packs across three cases) give per-case averages with heavy variance, and this tool models them as a soft pool spread across sealed boxes. Bandai does not publish official hit rates for One Piece TCG. This is not financial advice.