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Play Union Arena online
Union Arena has one rule set for every series it covers, a fifty-card deck, seven Life cards, and — as of this writing — no official way to play it online. Bandai's TCG+ app will build your deck and register you for the event, and the official site has a trial against the computer; neither puts you across a table from a person. Untap.in does, with 3,758 Union Arena cards in the database and a table that leaves the rules to the two of you.
Play-test a deck nowin your browser · nothing to install
Why there is no client, and what a table does instead
A digital client has to encode every rule and every card, which is why the big games get one and the mid-sized ones wait. A shared table does not encode anything: a card is its image and text, the zones are places, and the players resolve the game. Front line, energy line, action points, Raid, triggers — all of it is played the way you play it in paper, with the table moving cards and keeping counts. Nothing stops an illegal play, which is also why a card works the moment it is in the database rather than when somebody programs it.
Setting up a game
- Bring the deck in. Decks → Create → Union Arena, then Import and paste the list as text: one card a line, count first. There is no deck-site URL importer for Union Arena yet, so the list is typed or pasted; the deck builder's search finds the card as you go.
- Lay out the table. The Union Arena deck type has a play area, the deck, your hand, the discard, a removed pile and a token pile. Your seven Life cards are the top seven of the deck, placed face down in play; a pod agrees where. Action points and energy are counters on your seat.
- Open a game. New Game → Union Arena, two seats, send the link or let the lobby fill it. Voice is in the table.
- Play. Drag, flip, tap. Rewind takes the table back if an attack was declared wrong; the game is recorded as a replay.
The cards
3,758 cards across the English sets, each with its art. If a card from a newly released set is not there yet, the deck builder's Add Missing Card adds it with its image and text, and it becomes a card like any other for everyone. Alternate arts and promos are separate printings of the same card, so a deck keeps its identity whichever you pick.
What to expect
No rules engine, so both players need to know the game. No ladder. No official anything: Untap.in is an independent, fan-built table with no connection to Bandai. What you get is the thing nothing else offers — a game of Union Arena with a person who is not in the room.
Frequently asked questions
Is there an official way to play Union Arena online?
Not as of this writing. Bandai's TCG+ app builds decks and runs events, and the official site has a trial against the computer. Neither plays a game between two people.
Can I play Union Arena online with a friend?
Yes, on Untap.in: import or type your fifty-card deck, open a two-seat Union Arena game, and send the link.
Does Untap.in enforce the Union Arena rules?
No. It is a shared table: it moves cards and keeps counters, and you play the rules yourselves.
Are all the cards there?
3,758 are. A card missing from a new set can be added from the deck builder with Add Missing Card, art and text included.
Can I import a decklist?
As text, yes: one card a line with the count in front. There is no URL importer for Union Arena deck sites yet.
Is it free?
Yes. Decks, solo games and the lobby cost nothing; Power Up is an optional subscription for extra seats and perks.
Bring a list
Import a deck, goldfish a few hands, then open a table and send your pod the link. It runs in the browser, and the first play-test takes about as long to set up as reading this did.
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