Union Arena: Ultimate Beginner Guide to Bandai’s Anime TCG in 5 Easy Steps

Union Arena is Bandai’s anime trading card game, and it brings series such as Jujutsu Kaisen, Hunter x Hunter, Bleach, Attack on Titan and Solo Leveling together under one set of rules. Each booster set focuses on a single title, so you can build a deck from the anime you love and still play against friends who prefer a completely different series. This guide explains how Union Arena works in five easy steps, covers the key mechanics, lists the popular titles and helps you choose between Japanese and English boxes in Australia.

If you enjoy anime card games, Union Arena pairs well with Weiss Schwarz and Dragon Ball Fusion World, both covered on our trading card blog.

That shared ruleset is what makes the game special: one set of skills opens the door to dozens of different anime worlds.

What is Union Arena?

The game launched in Japan in 2023 and arrived in English in October 2024, starting with Bleach: Thousand-Year Blood War, Hunter x Hunter and Jujutsu Kaisen. Since then, new titles have been added at a rapid pace. Every title uses the same core rules, so once you learn the game you can play with any series.

Publisher: Bandai
Deck: 50 cards plus Action Point cards
Goal: remove all 7 of your opponent’s Life cards
Key zones: the energy line and the front line, each holding up to 4 cards
Special mechanic: Raid, which transforms a character into a stronger version
English booster box: 16 packs of 12 cards

Union Arena Jujutsu Kaisen Vol. 1 Japanese booster box

One of the biggest draws of the game is that every title feels different while using the same rules. A Jujutsu Kaisen deck plays very differently from a Code Geass deck, because each set has its own keywords, combos and characters, yet anyone who knows the basics can sit down and play either one.

How to play Union Arena in 5 easy steps

Use Action Points to place cards on your energy line
Rest cards on your energy line to generate energy in their colour
Spend energy to put characters onto your front line
Attack with front-line characters to remove your opponent’s Life cards
Block with your own characters to protect your Life, and win when your opponent has no Life left

Action Points, often called AP, are the heartbeat of every turn. You only have a few each turn, so deciding whether to build energy for later or deploy attackers now is the main strategic choice. The second player receives an extra AP on their first turn to balance going second.

Energy colours matter too. Characters require energy of a specific colour to be played, so most decks focus on one or two colours within their title. Building a smooth energy line early in the game is usually the difference between a slow start and a strong one.

Keeping a few AP in reserve for a surprise Raid is a classic way to swing a close game.

Raid and triggers explained

Raid is the signature mechanic of the game. It lets you play a stronger character on top of an existing one, as if the character has powered up or transformed. Many of the most exciting cards in each title have Raid effects that trigger when they arrive, such as removing an opposing character or drawing cards.

Triggers add excitement to every attack. When a Life card is removed, it may reveal a trigger that gives an immediate bonus, such as drawing a card or getting an extra boost. A well-timed trigger can turn a losing game around, so no game is over until the last Life card is gone.

Card types are simple to learn. Characters fight on the front line, events give one-off effects and fields provide ongoing bonuses. Many cards also include special keywords tied to their title, which helps each series capture the feel of its anime.

Popular titles

The game covers a huge range of anime and games. Some of the most popular titles include:

Jujutsu Kaisen, with a first volume and a second booster
Hunter x Hunter
Bleach: Thousand-Year Blood War, with two volumes
Code Geass: Lelouch of the Rebellion, with two volumes
Attack on Titan, with two volumes
Solo Leveling
Tokyo Ghoul
Goddess of Victory: NIKKE
SHY and The 100 Girlfriends Who Really, Really, Really, Really, Really Love You

Union Arena Solo Leveling Japanese booster box

New titles arrive regularly, often timed with popular anime seasons. One Punch Man was notable as the first title to release in Japanese and English at the same time, showing how closely Bandai now coordinates the two versions of Union Arena.

Japanese or English boxes?

Japanese boxes usually release first and cover more titles, and Japanese packs are smaller, with fewer cards per pack. English boxes contain 16 packs of 12 cards and are easier to play if you do not read Japanese. Our current range focuses on Japanese boxes, which are popular with collectors for their early releases and premium alternate art cards.

If you plan to play competitively, check which language your local events use. In general, players stick to one language for their tournament decks.

Five Pack Battle is a fun casual format worth trying. Each player opens five booster packs of the same title and builds a deck using only those cards, plus a few AP cards. It is a great way to enjoy a new set with friends without needing a full collection first.

Start decks are the easiest way to learn. Each one contains a ready-to-play deck for a single title, so you can learn the flow of AP, energy and attacks before opening booster boxes.

Most titles also release a second volume later, adding new characters and strategies to existing decks.

Collecting tips

Each title has its own chase cards, usually alternate art versions of the main characters with star markings that show their rarity. AP cards with special artwork are also highly collectable. Sleeve your best cards immediately, store them in toploaders or magnetic cases and keep binders in a cool, dry room away from sunlight.

If you collect Japanese boxes, store them flat and away from sunlight with the shrink wrap intact. Early Japanese printings of popular titles often become harder to find after their first run, so well-kept sealed boxes are popular with long-term Union Arena collectors.

Gift buyers should choose a title the recipient already watches. Opening packs of a favourite anime is exciting even for people who have never played a card game, and it is a natural way to introduce them to the rules.

Local stores across Australia run casual nights and tournaments, which are the best places to learn, trade and meet other fans.

Best Union Arena products to buy

Browse every box on our Union Arena product page.

Union Arena Hunter x Hunter Japanese booster box

Deckbuilding tips for beginners: include plenty of low-cost characters so you can act every turn, choose one or two energy colours and add a handful of Raid characters as your big finishers. Aim for a smooth curve rather than lots of expensive cards, because a hand full of powerful cards you cannot afford is the most common beginner mistake.

Practise blocking decisions as well. Knowing when to protect your Life and when to let an attack through so you can keep your characters for your own turn is a skill that improves with every game.

Above all, take your time. The game rewards patience and planning, and every match teaches you something new about your chosen title.

Union Arena FAQ

How do you win at Union Arena?

You win by removing all 7 of your opponent’s Life cards with attacks they cannot block.

When did Union Arena come out in English?

The English version launched in October 2024 with Bleach, Hunter x Hunter and Jujutsu Kaisen.

How many cards are in an English booster box?

English booster boxes contain 16 packs of 12 cards each.

Where can I read the official rules?

Bandai’s official Union Arena site includes rules, event formats and product information.

Whichever series you choose, the most important thing is to enjoy it. Union Arena shines brightest when you play with characters you love, against friends who love their own favourite series just as much.

More card game guides

Explore Weiss Schwarz, Dragon Ball Fusion World, Riftbound and Yugioh Magnificent Monsters on the Obsidia Collectables trading card blog.

Union Arena Attack on Titan Japanese booster box

Union Arena is the perfect game for anime fans who want to play with their favourite series. Learn the five steps, choose a title and enjoy building a deck full of characters you love.