Within the rule
- Pigni Base ×2
- Pigni Gold ×2
- Total Pigni
- 4
Within the 4-copy limit
Four copies of one monster, split across two prints.
How to Play
How to Play Tetramon
Learn the rules, build a legal deck, and understand how Tetramon cards fit together.
- 50
- Deck size
- 4
- Copy limit
cards in a deck
copies of the same monster
Different print variants still count toward the same limit.
Quick Rules
Every rule below is checked against current game data. A rule appears here only once the data behind it is closed.
- 50
- Deck size
- 4
- Copy limit
- Shared
- Print variants
Exactly this many cards, not a maximum.
Counted per monster, not per print.
Base, Silver, Gold and EX prints share one limit.
Build a Legal Deck
A Tetramon deck contains 50 cards. You can include up to 4 copies of the same monster, and different print variants of that monster still count toward the same limit.
Above the copy limit
- Pigni Base ×2
- Pigni Gold ×2
- Pigni EX ×1
- Total Pigni
- 5
Above the 4-copy limit
One extra print pushes the same monster to five copies.
Do Different Card Prints Count Separately?
No. Different prints of the same monster still count toward the same copy limit.
Base- Silver
- Gold
- EX
4 / 4 copies
Base, Silver, Gold and EX are prints of the same monster, so together they fill the whole limit.
Using a different print of the same monster does not give you another 4 copies.
Cards and Effects
Cards can reference gameplay effects. Use the Effects database when you want to understand a specific effect or find other cards that use it.
How Evolutions Fit Into Tetramon
Some Tetramon cards are connected through evolution lines. You can browse those relationships in the Evolution Browser.
The site maps known card-to-card evolution relationships. How and when evolution happens during a match is not verified yet, so it is not described here.
Check Your Deck
Paste or import an existing deck and find rule problems. Every finding links back to the rule it breaks.
Ready to Play?
Build a deck or check one you already have.
Tetramon Rules Questions
- How many cards are in a Tetramon deck?
- 50 cards. That is the exact deck size, not a maximum.
- How many copies of the same monster can I use?
- Up to 4 copies of the same monster.
- Do different print variants count as different cards for the copy limit?
- No. Different print variants still share the same copy limit.
- Can I mix Base, Silver, Gold and EX prints?
- Yes. You can use different prints, but their counts are added together for the same monster limit.
- How can I check if my deck follows the rules?
- Paste or import it in the Deck Checker and it reports the rule problems it finds. Open Deck Checker →
- Where can I build a Tetramon deck?
- The Deck Builder lets you pick cards, edit the deck and export a valid deck list. Open Deck Builder →
- How do evolutions work?
- The site currently maps known evolution relationships between cards; use the Evolution Browser to see connected cards. In-match evolution timing is not verified yet. Browse Evolutions →