Hi custom card makers! I'm building YGOWB, a free browser simulator for taking custom Yu-Gi-Oh cards from an idea into a playable deck.
In Card Studio, you define an effect through supported blocks: trigger, requirements, cost, targets and outcome. The duel engine resolves those effects automatically. You can build decks, practice against the computer, or duel online.
A group can create its own World with a shared card pool and banlist, and choose whether new cards need approval. The current ruleset is 2005-era Yu-Gi-Oh, with no Synchro, Xyz, Pendulum or Link summoning. Card ideas must fit the editor's supported effects; arbitrary written text isn't automatically executable.
Try it free: https://ygowb.com (browser-based; account required).
I'd love feedback from people who design customs: what card interaction would you most want to test automatically? A small effect example or a reproducible bug would be especially helpful.
Unofficial fan project, not affiliated with Konami or Duelingbook. The editor has optional AI assistance for art and effects, and some existing card art is AI-generated.
