Sets and Recruit pools
From the Polandball Go Wiki
New balls come from Recruit, where each pull costs 1,000 Clay and draws one ball from a set. A set is a themed banner: Polbies Classics for the core countries, Drums of Africa for African states and empires, Trick or Treat for Halloween forms, Ballsnar New Year for New Year forms like Firecracker China and Paper Dragon Russia. How many sets are open at once changes; as of late October 2026 there were eight. Polbies Classics is always open, and event sets run for a limited time before closing, then come back later as re-runs.
1 The pool#
Each set has a Pool & Rates screen in Recruit that lists every ball and form you can get from it, grouped by rarity, with the odds for each one. The pool is the real answer to "which set is this ball in": a ball is in a set when that set's pool lists it.
The same ball can sit in several pools. Malta, Niger and Vatican City are each in five, and Switzerland, Japan and Morocco in four. A pool can hold a ball's base form, one or more of its forms, or both.
2 Odds by rarity#
Every set splits a pull the same way by rarity. The pools the game showed in October 2026 gave:
- Common: 50.5%
- Uncommon: 31.5%
- Rare: 13.7%
- Epic: 3.4%
- Legendary: 0.85%
- Mythical: 0.05%
Within a rarity, that share is split evenly between the balls of that rarity in the pool. A Mythical is one pull in 2,000 on average, about 2,000,000 Clay.
3 Why set size matters#
Because each rarity's share is split evenly, the fewer balls of a rarity a set holds, the better your odds at any single one of them.
Polbies Classics has 200 balls, four of them Mythical: Fourth Reich, Polish-Lithuanian Commonwealth, Sealand and the United Nations. Each of the four shows 0.01%. Trick or Treat has only two Mythicals, Haunted House Fourth Reich and Vampire Romania, so each shows 0.03%. Legacy of Joseon, with 34 balls, shows each of its eleven Commons at 4.6%, where Polbies Classics, with 74 Commons, shows each at 0.68%.
So when the ball you want sits in more than one pool, the set with the fewest balls of its rarity is the best place to pull for it. Switzerland, for example, is in Polbies Classics, Heirs of the Caliphate, Lords of the Holy Age and Legacy of Joseon.
4 The sets#
These are the sets whose pools the game lists, with the number of balls and forms in each:
- Polbies Classics, 200
- Drums of Africa, 161
- Trick or Treat, 125
- Summer Splash, 115
- The New World, 102
- Sword and Sickle, 100
- The Grande Armée, 95
- Empires at War, 95
- Crown and Cross, 88
- Crossing the Rubicon, 70
- Silk and Steel, 69
- Liberty or Death, 68
- Ballsnar New Year, 54
- Heirs of the Caliphate, 53
- Mandate of Heaven, 53
- Lords of the Holy Age, 41
- Legacy of Joseon, 34
A pool can grow while its set is running. On October 3, 2026, French Colonial Empire and thirteen other balls joined Drums of Africa, two weeks after it opened.
5 Forms in sets#
Seasonal sets are mostly forms. Trick or Treat's 125 entries include six forms of Poland alone, from Pumpkin Head Poland and Corrupted Poland (Common) to Forefathers' Eve Poland (Legendary), plus new balls such as Sleepy Hollow and Wallachia. Its two Mythicals are both forms.
A form can sit at a different rarity from its base ball. China is Legendary, but its forms are spread across sets at every rarity: Jiangshi China is a Common in Trick or Treat, Lilypad China a Rare in Summer Splash, and Firecracker China a Legendary in Ballsnar New Year. Every form keeps its base ball's five country stats. See Balls, forms and rarity.
Some forms aren't in any pool, and come from events and other rewards instead.
6 Sets in the Dex#
The Dex groups balls into sets too, one card per set with a progress bar, but it counts each ball under the set it first appeared in. That's why its numbers are much smaller than the pools. The Dex's Trick or Treat card holds 14 balls, mostly new balls like Prague, Leinster and Sleepy Hollow, while the Trick or Treat pool holds 125. Legacy of Joseon shows 10 in the Dex and 34 in its pool.
The Dex also has cards for sets with no open pool in October 2026, such as Ballsmas Bash, A World at War, Countryballs World Cup and Special Units, the last holding Earth, Listenbourg and Beach Ball.
Each copy you own remembers where it came from. A ball's details screen shows its source, such as "Source: Trick or Treat".
7 Trading for a ball#
If a pool won't give you the ball you want, a friend can. Trades swap two balls of the same rarity, cost Scrap Sand on both sides, and reset both to the lower level and prestige of the two. A ball you got in a trade fills its Dex entry if it's new to you, but gives no Dex XP. Mythicals can't be traded. See Trades and friends.
8 On polbielytics#
Each ball's page lists the sets it's in, with the pool's odds, and the Polbies Dex can be filtered by set.