Collections open at player level 10. Each piece gives your heroes stats, and pieces form sets that add more. A piece goes from 0★ to 25★, which costs 750 of its own Fragments at every rarity. Sets level up with Collection EXP and Gold, but only as high as your Collection Master level allows, and that level depends on the total stars of all pieces you own. The Museum comes later: it is built at player level 28 and takes 27 hours. In it you display your Artifacts to earn Popularity, which brings in Popularity Coins, and you send heroes on Treasure Hunt expeditions that drop Artifact Fragments.
The full list of pieces, their stats at 0★ and 25★ and every set's effect is on the Collections page. This page covers the rules and the costs.
Collections and Artifacts
The Collection screen has three tabs: Collection, Artifact and Set. Collection is the name of the whole system and also of one kind of piece, so the tabs split the pieces by type, not by whether you own them:
- Artifacts (36 pieces: 16 Legendary, 20 Exotic) can go into Museum Booths and give Popularity.
- Collections (67 pieces: Rare, Epic and Legendary) only give stats and set bonuses. They cannot be displayed.
Each piece's stat applies to all heroes, to one class or to one faction, as shown in the Applies to column of the list. The stat grows by the same step every star: a piece's 0★ value is also what it adds per star, so a piece at 25★ gives 26 times its 0★ stat. For example, Antique Telescope gives Mages HP 57.3, ATK 7 and Skill Power 29.4 at 0★, and HP 1,490, ATK 182 and Skill Power 764 at 25★.
Getting pieces
- Collection Hunt at the Broadcast Station, on the same screen as hero recruiting. A pull costs 1 Collection Voucher. The batch button pulls 10 times, or 50 times if you have at least 50 Vouchers. There is also a free pull on a timer, and the screen counts down to a guaranteed Epic piece (Recruit xN to guarantee an Epic Collection). Vouchers come from the Diamond Shop and Daily Deal.
- Crafting from Fragments. A piece you don't own shows a Fragment bar. When it is full the piece says Tap to Craft, and tapping it unlocks the piece. That takes 10 Fragments, or 50 for an Exotic piece.
- Duplicates. Pulling a piece you already own turns it into 10 of its Fragments (50 for Exotic). The Exotic set Choice Packs, such as the Token of Reverence Choice Pack, work the same way: you pick one of the set's four pieces, and a duplicate becomes 50 Fragments.
- Diving. The Safe in a dive (it needs a Safe Key) opens as one Collection Hunt pull. See the Diving Dock.
- Treasure Hunt in the Museum drops Fragments of specific Artifacts (see the stage table under Treasure Hunt below).
Pulls also count toward the Collection Hunt milestone rewards, which are paid in Collection Master Badges: 50 Badges at each milestone. Season 1 has 12 milestones (50, 100, 200, 400 pulls, then every 200 up to 2,000), for 600 Badges. Seasons 2 to 7 have 10 each (200 to 2,000 pulls), for 500 Badges per season.
Stars
Each Star Up costs Fragments of that piece. Rare, Epic and Legendary pieces share one cost column; Exotic pieces pay more for the early stars and less for the late ones, and both reach the same 750 at 25★:
| Stars reached | Rare / Epic / Legendary, total | Exotic, total |
|---|---|---|
| 5★ | 25 | 50 |
| 10★ | 85 | 150 |
| 15★ | 210 | 300 |
| 20★ | 450 | 500 |
| 25★ | 750 | 750 |
Adding the unlock, a Legendary piece takes 760 Fragments from nothing to 25★ and an Exotic piece takes 800.
Each rarity has a Collection Universal Fragment (Rare, Epic, Legendary, Exotic). On a piece's star-up screen, turn on Auto Exchange and your Universal Fragments of that rarity count toward the next star. With it off they are ignored. They only work on pieces you already own.
Sets
Every piece belongs to a set. A set is activated with the Activate button on the Set tab, which is free and puts the set at Lv.1:
- A Rare, Epic or Legendary set needs every piece in it.
- An Exotic set needs any 2 of its 4 pieces. That turns on its 2-Piece Effect. The 4-Piece Effect is shown as Inactive until you own all four.
After that, each level costs Gold plus Collection EXP of the set's rarity (Rare, Epic, Legendary, Exotic). Rare, Epic and Legendary sets use the same amount of EXP and differ only in Gold:
| Set level, from Lv.1 | Collection EXP (Rare/Epic/Legendary) | Gold (Rare / Epic / Legendary) | Exotic Collection EXP | Gold (Exotic) |
|---|---|---|---|---|
| Lv.10 | 5,380 | 450 / 570 / 690 | 13,470 | 1,060 |
| Lv.30 | 41,380 | 7,250 / 10,670 / 14,190 | 104,470 | 24,710 |
| Lv.50 | 108,880 | 32,300 / 48,270 / 64,290 | 272,970 | 111,910 |
| Lv.120 | 569,880 | 432,800 / 653,770 / 870,290 | 1,424,970 | 1,518,410 |
| Lv.200 | 1,492,380 | 1,992,800 / 2,998,770 / 4,000,290 | 3,745,970 | 6,998,410 |
A set's effect is its Lv.1 value plus a fixed step per level after that. Example: Occultism (Legendary, Mages only) gives HP 367.5, ATK 24.5 and Skill Power 102.9 at Lv.1 and adds 182.8 / 12.2 / 51.2 per level. At Lv.30 that is HP 5,668.7, ATK 378.3 and Skill Power 1,587.7. Getting there costs 41,380 Legendary Collection EXP and 14,190 Gold, and you need Collection Master Lv.9 for the level cap of 30.
Some Rare and Epic sets give a production or building bonus instead of stats, once for every milestone you reach (for example every 3 Epic pieces owned, up to 30). The set level raises the bonus per milestone; the set screen shows your progress and the current total, both sent by the game server.
Collection Master
Collection Master caps every set's level. Each Master level needs a total number of stars across the pieces you own (pieces you don't own count as nothing) and costs Collection Master Badges. It also gives a flat HP, ATK and Skill Power bonus.
| Master level | Total stars needed | Set level cap | Badges, total from Lv.1 | Bonus at this level |
|---|---|---|---|---|
| 1 | 0 | 10 | 0 | none |
| 5 | 30 | 20 | 20 | HP 426, ATK 28, Skill Power 28 |
| 9 | 70 | 30 | 40 | HP 853, ATK 57, Skill Power 57 |
| 18 | 160 | 50 | 155 | HP 1,812, ATK 121, Skill Power 121 |
| 39 | 370 | 100 | 960 | HP 4,079, ATK 272, Skill Power 272 |
| 47 | 520 | 120 | 1,530 | HP 5,167, ATK 344, Skill Power 344 |
| 60 | 780 | 150 | 2,795 | HP 7,587, ATK 506, Skill Power 506 |
| 80 | 1,180 | 200 | 5,745 | HP 13,703, ATK 914, Skill Power 914 |
| 100 | 1,670 | 200 | 9,995 | HP 24,750, ATK 1,650, Skill Power 1,650 |
Set level 200 is reached at Master Lv.80; the last 20 Master levels only add stats. With all 103 pieces at 25★ you would have 2,575 stars, so Lv.100 does not need everything maxed. When a set hits the cap, its screen says Requires Collection Master Lv.N to increase level cap. The Master level is not spent.
Badges come from the Collection Hunt milestones above, Trade and events.
The Museum
Build the Museum at player level 28 (15,000 Gold, 8 Wire, 5 Screws, 27 hours). The Museum is a scene of its own with three buttons: Artifact (your Booths), Treasure Hunt (expeditions) and Public Engagement (Popularity, rewards and ranking).
Exhibition Area
The Museum has one Exhibition Area with levels 1 to 6. It has three indicators, Public Engagement, Learning Value and Visitor Appeal, which you raise one level at a time with Popularity Coins. Each indicator level adds +0.5% Popularity Bonus, so all three at Lv.10 show +15% and all three at Lv.200 show +300%.
To raise the area a level, all three indicators must be at the top of the current range, your player level must be high enough, and you pay the cost below. The area level opens more Booths, raises the Booth level cap and unlocks Treasure Hunt stages.
| Area level | Player level | Indicator levels | Popularity Coins to fill all three | Booths | Booth level cap | Treasure Hunt stages | Upgrade cost |
|---|---|---|---|---|---|---|---|
| 1 | 28 | 1–10 | 63,000 | 1–5 | 1 | 1 | comes with the building |
| 2 | 36 | 11–30 | 603,000 | 1–10 | 2 | 1–2 | 300,000 Gold, 40 Building Blueprints, 25 Stained Glass, 25 Screws |
| 3 | 41 | 31–60 | 2,341,500 | 1–15 | 3 | 1–4 | 500,000 Gold, 65 Building Blueprints, 25 Tiles, 25 Insulation Cotton |
| 4 | 46 | 61–100 | 6,183,000 | 1–20 | 4 | 1–6 | 700,000 Gold, 95 Building Blueprints, 25 Paint, 25 Stained Glass |
| 5 | 51 | 101–150 | 13,155,000 | 1–25 | 5 | 1–8 | 950,000 Gold, 125 Building Blueprints, 25 Paint, 25 Tiles |
| 6 | 56 | 151–200 | 19,654,500 | 1–30 | 6 | 1–10 | 1,200,000 Gold, 155 Building Blueprints, 25 Pipes, 25 Paint |
Season 1 caps player level at 40, so in Season 1 the area stops at Lv.2 (Lv.3 needs 41). See the beginner route for the level cap.
Booths
There are 30 Booths, each holding one Artifact. Booth 1 is open from the start. Every other Booth is unlocked by upgrading it to Lv.1, and Booths go up to Lv.6. Upgrading Booth N to a level needs two things:
- Booth N−1 at that level or higher. Booth 2 can never be above Booth 1, so the Booths rise in order.
- The Exhibition Area level: at least the target Booth level, and at least the Booth's group (Booths 1–5 need Area Lv.1, 6–10 Area Lv.2, up to 26–30 at Area Lv.6).
Each Booth level gives a Popularity Bonus. Booths 4, 6, 12, 20 and 30 are large and give double:
| Booth level | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Normal Booth | 0% | 10% | 20% | 30% | 45% | 60% |
| Large Booth | 6% | 20% | 40% | 60% | 90% | 120% |
Upgrades cost Gold, Popularity Coins and Building Blueprints and take time. Booth 1 from Lv.1 to Lv.2 costs 16,500 Gold, 7,800 Popularity Coins and 8 Building Blueprints and takes 4h 53m; taking it all the way to Lv.6 costs 391,400 Gold, 454,200 Popularity Coins and 88 Blueprints, about 50 hours in total. Unlocking Booth 2 costs 5,400 Gold, 1,300 Popularity Coins and 5 Blueprints (3h 10m). When the timer ends, tap the Booth to finish the upgrade.
Popularity and Popularity Coins
Every displayed Artifact has a Popularity value that depends on its rarity and stars. Collections and non-Artifact pieces have none.
| Artifact stars | 0★ | 5★ | 10★ | 15★ | 20★ | 25★ |
|---|---|---|---|---|---|---|
| Legendary | 100 | 130 | 200 | 300 | 450 | 600 |
| Exotic | 200 | 260 | 400 | 600 | 900 | 1,200 |
The game's help says the area's Popularity is the sum of the displayed Artifacts' Popularity, raised by Booth and area upgrades, and that higher Popularity brings in more Popularity Coins per hour. The Public Engagement screen shows an hourly rate equal to your Popularity (3,000 Popularity shows 3000/h). Coins pile up in the Museum; tap the coin bubble over a Booth to collect them. The game server calculates both Popularity and income.
There are 63 Popularity Rewards, at 100, 200, 300 … up to 30,000 Popularity. They check the highest Popularity you have ever reached, so swapping Artifacts out later does not take them away. The Popularity Ranking uses your current Popularity. Together the rewards give 320 Exploration Guides, 155,000 Popularity Coins, 66,000 Legendary and 197,500 Exotic Collection EXP, 70 Legendary and 169 Exotic Collection Universal Fragments, and 10 Fragments of each Nautical Treasures Artifact.
Treasure Hunt
Treasure Hunt sends a squad of heroes to one of 10 stages for 4 hours. You get 1 squad at player level 28, 2 at 36 and 3 at 41, and each stage takes one squad at a time. From player level 30 you can choose 8 hours and from level 40, 12 hours. A longer run costs 2 or 3 times the supplies, and the game's help says it also gives 2 or 3 times the progress and rewards.
Sending a squad
- Tap an unlocked stage and Form Squad. The stage names a squad size (1, 2 or 3 heroes) and a Recommended condition, such as "Rare and above Warrior Heroes".
- Pick that many heroes. Heroes who meet the condition are listed first, but any free hero can go; the condition only adds score. Heroes already out on another Treasure Hunt are not listed.
- Pay the three kinds of Exploration Supplies shown. If you are short, the Get button buys the missing ones.
A star requirement in the condition counts hero stars plus Exclusive Weapon stars, in big stars. "6-Star Exotic" means 30 small stars: a 25★ hero with a 5★ Exclusive Weapon.
Score and grade
The squad screen adds up a score: 100 per star the stage has, plus points for each hero who meets the condition. A full squad of matching heroes always adds 300 (100 each in a 3-hero squad, 150 each in a 2-hero squad, 300 for a single hero). The score sets the odds of the grade:
| Score | S | A | B | C | D |
|---|---|---|---|---|---|
| 0 | 100% | ||||
| 100 | 15% | 85% | |||
| 200 | 30% | 70% | |||
| 300 | 10% | 30% | 60% | ||
| 400 | 20% | 40% | 40% | ||
| 500 | 10% | 30% | 60% | ||
| 600 | 20% | 40% | 40% | ||
| 700 | 5% | 30% | 65% | ||
| 800 | 10% | 40% | 50% |
So a 0★ stage with three matching heroes scores 300 and can roll B at best. A 5★ stage with the same squad scores 800, and the worst it can roll is B. The roll itself happens on the game server.
The grade changes what the run gives:
| Grade | Progress | Base reward | Random rewards |
|---|---|---|---|
| D | base −25% to +25% | ×1.0 | 1 |
| C | base +25% to +75% | ×1.5 | 2 |
| B | base +75% to +125% | ×2.0 | 3 |
| A | base +125% to +175% | ×2.5 | 4 |
| S | base +175% to +225% | ×3.0 | 5 |
Stage stars and rewards
Every run adds progress to its stage. At 250, 750, 2,000, 5,000 and 10,000 total progress the stage gains a star, up to 5★. Each star raises the score by 100, the base reward from 2,500 Popularity Coins (0★) through 3,000, 4,000, 5,000 and 6,500 to 7,500 (5★), and adds Fragments to the random rewards. Random rewards also include 2,500 Legendary Collection EXP, which becomes Exotic Collection EXP at 5★ on stages 3–10.
| Stage | Needs Area | Base progress | Artifact Fragments (stage star where they appear) |
|---|---|---|---|
| 1. Old Lighthouse Lookout | — | 240 | Antique Telescope 0★, Brass Sextant 1★, Navigation Log 2★, Portable Sundial Compass 3★ |
| 2. Library Ruins | Lv.2 | 180 | Origin of Species 0★, Celestial Revolutions 1★, Das Kapital 2★, Napoleonic Code 3★ |
| 3. Feathered Serpent Altar | Lv.3 | 120 | Starlit Stone Carving 0★, Turquoise Jade Mask 1★, Exotic Memory in Color 4★ |
| 4. Winter Palace Remnant | Lv.3 | 120 | Delicate Jeweled Egg 0★, Grand Cannon 1★, Exotic Falcon Statue 4★ |
| 5. Pharaoh's Tomb | Lv.4 | 120 | Feline Statue 0★, Golden Mask 1★, Exotic Enamel Medallion 4★ |
| 6. Crusader Anchorage | Lv.4 | 120 | Gilt Silver Cup 0★, Enamel Cross Brooch 1★, Exotic Ancient Calendar Stone 4★ |
| 7. Moon Pyramid | Lv.5 | 120 | Turquoise Jade Mask 0★, Starlit Stone Carving 1★, Exotic Treasured Crown 4★ |
| 8. Desert Oasis | Lv.5 | 120 | Grand Cannon 0★, Delicate Jeweled Egg 1★, Exotic Golden Gemstone Bracelet 4★ |
| 9. Amber Room Ruins | Lv.6 | 120 | Golden Mask 0★, Feline Statue 1★, Exotic Flask of Cleansing 4★ |
| 10. Sunken Cathedral | Lv.6 | 120 | Enamel Cross Brooch 0★, Gilt Silver Cup 1★, Exotic Ancient Statue 4★ |
Example. On Stage 3 (base progress 120) a D run adds 90–150 progress and an S run adds 330–390. Reaching 5★ there takes 10,000 progress, roughly 28 S runs or 83 D runs at 4 hours each.
When the timer ends, open the stage to see the result, then press Claim. Until you claim, the squad and its heroes stay busy. Exploration Guides cut 30 minutes off a run each; they come from the Alliance Shop, the Privilege Shop and the Popularity Rewards.
Exact formulas
- Piece stat at star s = 0★ value + per-star step × s.
- Set effect at level L (L ≥ 1) = Lv.1 value + step × (L − 1). Exotic 4-Piece Effect works the same way and only applies with all four pieces owned.
- Set level cap = cap of your Collection Master level. Master level needs total stars of owned pieces ≥ the level's requirement.
- Indicator Popularity Bonus = 0.5% × indicator level, summed over the three indicators.
- Booth N to level L needs Booth N−1 at level L and Exhibition Area level ≥ max(L, ⌈N / 5⌉).
- Treasure Hunt score = 100 × stage stars + Σ points of heroes who meet the condition. Use the highest score row not above your score.
- Progress from a run = ⌊base progress × (1 + grade bonus)⌋, with the grade bonus drawn from that grade's range.
Notes
- The Activate red dot on an Exotic set only lights up when you own all four pieces. The button already works with two, so check your Exotic sets by hand.
- "Public Engagement" is two things. It is the Museum button for Popularity and rewards, and also one of the three Exhibition Area indicators.
- Popularity is not Popularity Coins. Popularity is the Museum's score for rewards and ranking; Popularity Coins are the currency you spend on indicators and Booths.
- The squad screen's odds are an estimate. It shows the odds from the score table and a progress range per grade; the grade and the progress you actually get come from the game server. The Random Rewards panel says Grant 1 random reward per exploration, but higher grades give up to 5.
- A finished run that you have not claimed may still block a new one. The expedition red dot can count that squad as free while the Form Squad button counts it as busy and says the squads are full. Claim finished runs first.
- Visitors in the Museum are only scenery. Their number goes up with Popularity (about 5, 10, 15 or 23 people at 0, 501, 1,001 and 2,001 Popularity), and they do not change your income.
- Unconfirmed: how Booth and indicator bonuses combine into Popularity, and how many Popularity Coins you actually earn per hour. The game server calculates both. The help text suggests a Booth's bonus raises the Artifact in it; if so, put your highest-Popularity Artifacts (Exotic, high stars) in the large Booths.
- Unconfirmed: whether 8- and 12-hour Treasure Hunts really give 2× and 3× progress and rewards. The help text says so and the supplies do scale, but the reward calculation is not published.
- Unconfirmed: which heroes get the Collection Master bonus. The Master screen lists HP, ATK and Skill Power without naming a class or faction.
- Unconfirmed: 12 more pieces and 3 more Legendary sets exist in the game data but are hidden in the global version. Whether they can still drop, and whether they would count toward Master stars, is not known. This page counts only the 103 visible pieces.

