Bingo Event

01. The Event

Every version of this event is the same board with a different coat of paint. Oktoberfest, Party Gifts, Donut Day and Energy Revolution all run one engine: 15 tasks in a 5×3 grid, a chest for each of the 5 rows and 3 columns, and one grand chest for all 15. The only things a new skin changes are the art, the unlock level and what the chests pay.

Each task cell pays a small resource pack on its own. The real value sits in the chests, and the grand chest is most of it: 5,000 Diamonds in three of the four skins so far. Everything in this guide is about getting to that chest as cheaply as possible.

02. Unlock and Entry

The unlock level is a skin setting, not an event rule. Chief's Office Lvl 9 is the common bar, but Energy Revolution opened at Lvl 7 and Party Gifts had no level condition at all. Check the skin block in section 07 for the current bar. The event runs for seven days and appears on the events calendar before it opens, so you can see it coming.

The more important entry fact: recent skins ship as two reward variants of the same board, and the server picks which one you get. Oktoberfest either pays 45 Universal Speedups or 95 Electro Cores across its chests. Party Gifts either pays speedups or 48 Electro Cores. You cannot switch between them. Electro Cores are a building material used from Chief's Office Lvl 30, while the event unlocks around Lvl 9, so a newer player on the Electro Core variant is banking materials for months from now.

03. The Task Grid

Three of the four skins so far use the exact same 15 tasks, in the same positions, with the same cell rewards. If you have played Donut Day, Party Gifts or Oktoberfest, you have already seen this board. Only Energy Revolution used a different task list, covered in its own block in section 07. Column and row names below are this guide's labels for the lines, chosen for the cell that defines each one.

Cell Rewards

Every cell pays one stack of 10K resource packs. Claiming all 15 banks 10.8M Ammo, 8.1M Cash, 2.2M Electricity and 600K Gas. That is a useful top-up for a mid-game account, but it is the side dish. No cell pays Diamonds, speedups or books.

04. Claiming

A chest does not unlock when its cells are finished. It unlocks when its cells are claimed. A cell that shows "Claim" but has not been tapped still counts as blocking its row chest, its column chest and the grand chest. The in-game rules text for every skin says "complete all tasks in a row" and never mentions this. Players finish a line, see the chest stay dark, and assume progress is lagging. It is not. Tap the cells.

• ▸There is no claim-all. A full clear is 24 separate taps: 15 cells, 5 row chests, 3 column chests, 1 grand chest.
• ▸The red dot is your to-do count. It totals every cell and chest currently ready to claim. Zero means nothing is waiting on you.
• ▸Tapping the big chest art only previews it. The grand chest is claimed from the Claim button in the tip panel next to it.
• ▸Claim order within a line does not matter. The chest lights when the last cell in it is claimed, whatever the order.

05. Line Cost Ladder

Four of the nine chests are free. Two more cost 2,500 Diamonds. The last three cost real money. That is the whole event in one sentence, and it follows from where two cells sit: the Diamond cell anchors the Diamond Row and the Diamond Column, the pack cell anchors the Pack Row and the Pack Column, and the grand chest needs both.

Cells That Move Together

• ▸Criminal hunting moves three cells. Defeat 30 Criminals, Consume 1,000 Energy and the 5 Crime Boss rallies all burn energy on the map. One focused session on days one and two covers all three.
• ▸Both Confiscate cells read one total. Do not treat 10M and 20M as separate jobs. Aim for 20M and collect both.
• ▸Healing follows fighting. Heal 30 Officers is a by-product of the criminal and boss cells. Do not heal early just to tick it.
• ▸Speedups, Intel, Warehouse and Arena are calendar cells. 2,000 minutes of speedups, 15 Intel cases, 15 Warehouse collections and 20 Arena matches all clear on normal daily play if you start on day one. Start on day four and Arena and Warehouse can run out of days.
• ▸150 Contributions is the sleeper. It is the only alliance cell and it sits in the Pack Row and the Diamond Column. Donate to Alliance Tech every day from day one.

06. The Pack Cell

The pack cell gates more than half of the event's value. It locks the Pack Row chest, the Pack Column chest and the grand chest, and the grand chest alone is 5,000 Diamonds in most skins. Using the Oktoberfest speedup variant as the worked example: a player who does everything except buy a pack ends with 18 speedups, 4 Legendary Recruitments, 2 Patrol books, 4 Hero EXP and 80 Skins Coin. The three locked chests hold 5,000 Diamonds, 27 speedups, both Deployment books, 2 Legendary Hero Fragments and 130 Skins Coin.

Diamonds

Universal Speedup

Construction Speedup

Electro Core

Patrol Book

Deploy Book

Hero Fragment

Diamond Math

The Use 2,500 Diamonds cell is only worth funding if you also buy the pack. With the pack, the grand chest returns 5,000 Diamonds, so the 2,500 you spend comes back doubled on top of every other chest. Without the pack there is no grand chest, and 2,500 Diamonds buys you exactly two chests: the Diamond Row and the Diamond Column. If you are not buying the pack, only spend Diamonds you were going to spend that week anyway, and make sure the spend lands inside the event window so it counts.

Which Pack Qualifies

The cell text says "a pack containing 2,500 or more Top-Up Points". The rule behind the cell is written as one pack priced at or above $4.99. Read the Top-Up Points on the pack you are considering before you buy, and prefer a pack that clearly satisfies both. The Go button opens the pack center, not a specific pack.

07. Themes

Every skin below runs the board in sections 03 through 06. What changes is the art, the unlock level, the reward variants and what the chests pay. Skill book counts differ sharply between skins, from 3 to 28 for a full clear, so a skin's chest table is the only reliable way to value it. Release order, oldest first.

⚡ Energy Revolution

The first skin, and the only one with a different set of 15 tasks. It leans on power growth and alliance activity instead of combat. It also pays the most: 90 Electro Cores, 5,000 Diamonds and 28 Legendary Skill Books for a full clear. The unlock is the lowest of the standalone skins at Chief's Office Lvl 7.

• ▸Unlock: Chief's Office Lvl 7.
• ▸No Diamond cell. This board has no Use Diamonds task, so the only paid gate is the pack cell. Free players reach 6 of 9 chests on play time alone.
• ▸Five cells have no Go button: Claim Alliance Gifts, Speedups, Assist, Log in and the pack cell. Navigate yourself.
• ▸Ready and claimed chests look the same. This skin uses one sprite for both states, so use the red dot and the Claim button, not the chest art, to know what is waiting.
• ▸Theme difference: 28 Legendary Skill Books, the most of any skin. No board behind the cells; each cell is its own tile. The recharge button switches to its bonus-points promo while this skin runs.

🍩 Donut Day

The skill-book skin. 23 Legendary Skill Books for a full clear, with 20 of them in the grand chest. One reward variant only. The catch is the speedups: all 45 are Construction speedups, not Universal, so they only help building queues.

• ▸Unlock: Chief's Office Lvl 9.
• ▸The pack cell matters most here. 20 of the 23 books are in the grand chest. Skip the pack and you get 2 Patrol books from the two columns you can reach.
• ▸Cosmetic: the Afternoon Treats Avatar Frame is offered in the Skins settings while the event is open.
• ▸Donut Pack is advertised as the source for event items. Contents and price are set by the server and are not published here.

🎆 Party Gifts

The Fourth of July skin, and the odd one out on access: no Chief's Office requirement at all, with the entry icon showing from Lvl 6. It does not appear in the normal event center. It lives as one panel inside the Fourth of July Bash festival hub. Two reward variants again: speedups or 48 Electro Cores.

• ▸Unlock: none. Entry icon from Chief's Office Lvl 6. The lowest bar of any skin.
• ▸Star-Spangled Gift Boxes are not boxes. They are draw currency for the Top Hat Celebration panel in the same hub, and unused ones are removed when the festival ends. Spend them before the hub closes.
• ▸The grand chest pays 2,000 Diamonds, not 5,000. The Diamond math in section 06 is weaker here: the Use 2,500 Diamonds cell is a net loss of 500 even with a full clear, so it only makes sense if you value the 162 Gift Boxes.
• ▸Theme difference: 3 Legendary Skill Books for a full clear, the fewest of any skin. The board is drawn slightly larger than the other skins.

🍺 Oktoberfest

Two reward variants: 45 Universal Speedups or 95 Electro Cores for a full clear. Everything else in the chests is identical between them. The grand chest tip promises "Bavarian Treats". That is flavor text, not an item; the chest pays Diamonds, the variant currency, Hero Fragments and Skins Coin.

• ▸Unlock: Chief's Office Lvl 9.
• ▸Skins Coin is the Skins Store currency. 210 is the full-clear total; the store's cheapest items cost 1,500, so this is a partial contribution, not a purchase.
• ▸Cosmetics: a chat bubble and a nameplate are offered in the Skins settings while the event is open, whichever variant is running.
• ▸Oktoberfest Pack I and II exist and are advertised as the way to get event items. Their contents and prices are set by the server and are not published here.
• ▸Theme difference: only 4 Legendary Skill Books for a full clear. This is the first skin with row and column claim sounds and a custom "Claimed" stamp.

08. Common Mistakes