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Key information about DUELBRAIN games, friends, and accounts.

GAMES

About the games

Block Battle

A competitive puzzle game where you place blocks, clear lines, and send garbage blocks to your opponent. Clearing two or more lines at once triggers an attack. You lose when you can no longer place a block.

Random Match: Play one-on-one online. Results count toward records, history, and rankings.
Friend Match: Send a challenge to a friend. The match is saved to history but does not affect rankings.
Practice: Practice placement and rotation without a time limit.
High Score: A score attack with 30 seconds per move. Scores are ranked.

Connect Four

Tap a column to drop a medal. The first player to connect four of their medals vertically, horizontally, or diagonally wins.

Random Match: Play an online opponent. Wins, losses, draws, streaks, history, and rankings are updated.
Friend Match: Send a challenge to a friend. The match is saved to history but does not affect rankings.
Connect Four has no Practice or single-player High Score mode.

Seven Card Stud

A poker game where you make the best five-card hand from seven cards while reading exposed cards and using bets, raises, and folds.

Random Match: choose a 2–4 player table. Monthly net coin gain from matches is ranked.
Friend Match: 2–4 players. The owner sets starting coins and invites the required friends.
Ante is 10 coins. Betting uses 20-unit increments on 3rd/4th Street and 40 on 5th–7th Street.
If you cannot cover a bet, ALL-IN applies and main/side pots are settled separately.

FRIENDS

Friend feature

The friend feature is available to registered accounts. Share your personal Friend ID, and once a request is accepted, the other player is added to your friend list.

Check your Friend ID on the Friends screen in the app.
Enter the other player’s Friend ID to send a request, or accept a request you received.
Choose a player from Friend Match in either game and send a match challenge.

You may not be able to start immediately if the other player is offline or already in another match. Removing a friend deletes that friend relationship.

ACCOUNT

Guests and registered accounts

Guests can play the games, but records such as match results and rankings are not saved, and friend features are unavailable.

Registered accounts can use a player name, match records, match history, rankings, and friend features.