Grand Line Tournament
Random seeding. Twenty-four-hour rounds. One player leaves as champion.
Sign in with Google once, choose an open tournament, and report each result from your bracket match.
Read how to play ↓Open tournaments
Winner takes all. Eliminated players share their finishing stage.
How to play
Your route from the muster roll to the final report. Each tournament page keeps the live deadlines and your next action in one place.
Find a tournament ↑Choose a tournament
Open a tournament and check its format, schedule, entry type, available seats, and rules. Sign in with Google when you are ready to join.
Claim your seat
Add your Facebook profile so opponents can reach you, accept the rules, and claim a seat. If the event is full, you enter its first-in, first-out waitlist automatically.
Confirm premium entry
Free tournaments skip this step. For a premium event, arrange the entry fee with the organizer before your seat timer ends; unpaid seats move to the waitlist.
Lock in your deck
Paste your OPTCGSIM card list before the tournament starts, with your leader on the first line. You can update the list until deck submissions close.
Meet your opponent
When a round opens, find your pairing in the bracket or Swiss standings. Use the Facebook link on your opponent's profile to arrange the match.
Play within the round
Play the submitted deck and finish before the reporting deadline shown on the tournament page. The next round is scheduled after every match is settled.
Report the result
Both players report I won or I lost from their match. Matching reports settle the result immediately; missing or conflicting reports go to an admin for review.
Save screenshots or a match log until the result is settled. If reports disagree or a player does not report, the organizer makes the final call after reviewing the match.