Gacha Odds Calculator for Extreme Demon Gacha
Pick any card to see how rare it really is: the chance per card and per pack, the holo odds, and how many packs you need for a 50%, 90% or 99% chance. The #1 card, GRIEF, is in 1 in 4,646 packs, and half of players need 3,221 packs to pull it.
Rules checked · card data synced · sources
#1#1 GRIEF
Apex · by icedcave, verified by Doggie · 10,000 pts first copy
- Per card
- 0.0043%
- 1 in 23,229
- Per pack
- 0.02%
- 1 in 4,646
- Holo, per pack
- 0.0022%
- 1 in 46,459
- 50% chance by
- 3,221 packs
- 45 days
- 90% chance by
- 10,698 packs
- 4.9 months
- Holo, 50% by
- 32,203 packs
- 14.7 months
10.2%
At least one GRIEF
1.07%
At least one holo
89.8%
Still none (normal luck)
Every pack is a fresh roll: no pity, no guarantee. Opening the average 4,646 packs ("1 in 4,646") gives you 63.2%, not 100%.
Copies you already own
Next normal copy adds +10,000 pts, next holo adds +30,000 pts. Worth checking before a trade: dupes add less every time.
144 a day is the ceiling (one every 10 minutes, storage never full); most players open far fewer. At 72 a day, your chance of this card within a week is 10.3%.
Packs for a 50%, 90% and 99% chance
| Rarity | Any card of the tier | One specific card | Any holo of the tier | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 50% | 90% | 99% | 50% | 90% | 99% | 50% | 90% | 99% | |
| Apex1 level | 3,221 | 10,698 | 21,395 | 3,221 | 10,698 | 21,395 | 32,203 | 106,974 | 213,948 |
| Mythic9 levels | 200 | 662 | 1,323 | 1,792 | 5,952 | 11,904 | 1,991 | 6,614 | 13,227 |
| Legendary25 levels | 47 | 154 | 307 | 1,155 | 3,835 | 7,669 | 462 | 1,534 | 3,068 |
| Epic65 levels | 12 | 38 | 75 | 737 | 2,447 | 4,893 | 114 | 377 | 753 |
| Rare160 levels | 3 | 10 | 19 | 469 | 1,557 | 3,114 | 30 | 98 | 195 |
| Uncommon380 levels | 1 | 3 | 5 | 294 | 974 | 1,948 | 8 | 26 | 51 |
| Common980 levels | 1 | 1 | 1 | 180 | 596 | 1,192 | 2 | 6 | 12 |
"One specific card" uses the tier average. Inside a tier the easier levels drop a little more often than the hard ones, so pick the card in the calculator for its exact number. A Common reads 1 pack because almost every pack has one (99.9%).
Odds for famous levels
| Level | Rarity | Per pack | 50% chance by | Holo, 50% by | First copy |
|---|---|---|---|---|---|
| #6 Flamewall | Mythic | 1 in 2,582 | 1,790 packs | 17,896 packs | 3,400 pts |
| #27 Acheron | Legendary | 1 in 1,492 | 1,034 packs | 10,338 packs | 1,100 pts |
| #49 Silentlocked | Epic | 1 in 1,208 | 837 packs | 8,370 packs | 360 pts |
| #113 Tartarus | Rare | 1 in 842 | 584 packs | 5,834 packs | 120 pts |
| #392 Sonic Wave | Uncommon | 1 in 452 | 314 packs | 3,133 packs | 35 pts |
| #861 Bloodbath | Common | 1 in 298 | 207 packs | 2,063 packs | 12 pts |
How the calculator works
The game publishes a rate for every level on its Rates page. That is the chance per card: every one of the 5 cards in a pack is drawn on its own, and each then has a 10% chance to be holo. Everything else follows from that one number.
- Per pack = 1 − (1 − p)5. For GRIEF, p = 0.0043%, so a pack has it 0.02% of the time (1 in 4,646).
- Chance in N packs = 1 − (1 − per pack)N. In 1,000 packs that is 19.4% for GRIEF.
- Packs for a chance T = log(1 − T) ÷ log(1 − per pack), rounded up: 3,221 packs for 50%, 21,395 for 99%.
- Holo: the same formulas with p × 0.1.
There is no pity counter in the game, so the calculator has none either. The "next copy adds" line uses the leaderboard rules (holo first at 3×, then ½, ⅓ …), the same ones as the trade checker and the score ladder. To feel what these odds are like in practice, open a day of packs in the pack simulator.
Odds calculator questions
Is there an Extreme Demon Gacha odds calculator?
Yes, this page. Pick any of the 1,620 cards to see its chance per card and per pack, its holo odds, the packs and days to a 50% or 90% chance, and your chance in any number of packs. The rates come from the game's public rates data, synced 2026-11-14.
How many packs does it take to get the Apex card?
The Apex card is GRIEF, the AREDL #1. A pack has it 1 in 4,646 times, so you reach a 50% chance after 3,221 packs (22 days of free packs at the maximum 144 a day) and 99% after 21,395 packs.
How do you calculate gacha odds per pack?
Each of the 5 cards in a pack is its own roll, so the chance a pack holds a card at least once is 1 − (1 − p)^5, where p is the per-card rate. The chance within N packs is 1 − (1 − pack chance)^N, and the packs for a target chance T is log(1 − T) / log(1 − pack chance), rounded up.
Is there a pity system in Extreme Demon Gacha?
No. The game says odds never change based on your collection, activity or past pulls, and there is no pity. Every pack is a fresh roll, so 500 packs without a Mythic do not make the next pack any better.
If a card is "1 in 4,646 packs", am I guaranteed it after 4,646 packs?
No. That is the average wait. After exactly that many packs your chance is 63.2% for any card, because some players get it early and some very late. Use the "If you open N packs" box to see your chance for the packs you actually opened.
How rare is a holo card?
Every card has a 10% chance to be holo, so a specific holo is 10 times rarer than the normal card. Any holo at all is common: 41.0% of packs contain one. A holo Mythic of any kind takes 1,991 packs for a 50% chance.
Can I share my result?
Yes. "Copy link to this result" copies a link like gachademon.com/odds-calculator?card=grief&packs=500 that opens the calculator on the same card and pack count. You can also type ?card= with a level name or an AREDL rank.
Sources
- G1Extreme Demon Gacha: drop rates (public /api/rates, v4) · 2026-11-14
- G2Extreme Demon Gacha: level index (public /api/levels) · 2026-11-14
- A1AREDL: All Rated Extreme Demons List · 2026-11-14