Nine rule areas

Protocol rules

The Cartoria engine is shared; Protocol’s forces, cards, and names express the same rules in a different world.

Prepare your Squad before battle.

The realm

Protocol has its own cards, crystals, decks, rewards, and rankings. Your account stays the same across realms.

Units and Modules progress from level 1 to 5. Fuse five identical copies at one level to obtain the next.

Levels, stats, and compatibility are visible in the catalog. A listed or reserved card is not freely usable.

An active Squad of five to ten Units fights in the chosen order. Attacks resolve automatically on the server.

Ranked PvP, friendly battles, PvE, and Operations share the engine but have distinct conditions.

Missions and rankings reward participation under realm rules. Results remain within Protocol.

Data boosters add cards when opened. Purchases use crystals from this realm.

Trades concern Protocol cards only and follow common market timing, price floors, and eligibility.

Ranked Directives are free; crystals, boosters, and other rewards stay with the realm.