About Fortress Clash

Fortress Clash is a two-player card game. Each side has a fortress and a deck, and the game ends when one fortress does not. Between those two facts sit units, equipment, territory and the awkward question of what you can afford to spend this turn.

Cards belong to one of four factions, and a deck commits to one of them. That commitment is most of the game: you get the tools that faction has and not the ones it does not, and you work out what to do about the gap.

Where the cards come from

Every card is drawn from a single source of record and frozen into a numbered set. A set never changes once published — the one in play is 2026.09.18-2, with 148 cards. When cards are added, corrected or retired, that becomes a new set, and the old one stays exactly as it was.

This matters more than it sounds. It means a deck you built last month is still the deck you built, and when something in it is no longer legal you are told which card and why, rather than finding the deck has quietly changed size.

What this site is for

Building decks and keeping them. You can browse the whole set without an account; you need one to save anything. Decks are checked against the official rules as you build, so a deck that will not be accepted at a table tells you before you get there.