Build it, then actually play it.
Digiport is a fan-made Digimon Card Game deck builder and play client that runs entirely in your browser. Every English-legal card, validation against the 50 main deck / 5 Digi-Egg deck limits and the ban list, and a manual board with the assists a kitchen table cannot give you: a memory gauge that flips at 0 and ends the turn, a security stack that stays fanned and countable, a breeding area kept properly separate, and digivolution stacks that remember what is underneath them.
Your decks
Three ways in
Build a deck
Filter the whole English pool by colour, level, cost, type and trait, and watch the cost curve and colour spread move as you add cards. The 4-copy cap, the ban list and the 50 + 5 counts are checked while you type, not at the end. Import and export in the plain-text list format every other Digimon site already speaks.
Open the builder →Goldfish a deck
Deal a hand against a seat that only ever passes, and see how the deck actually opens: hatch out of the Digi-Egg deck, move up from the breeding area, spend down the memory gauge, check security. The fastest way to find out that your curve is a card too heavy.
Pick a deck →Hotseat
Two players, one screen, one turn each. The board covers itself between turns so that neither hand nor security is on show when the device changes hands, and the full action log means you can always settle what just happened. Online play over a real server is the next phase.
Start a hotseat game →