How to Play Tetramon Duel Masters in TCG Card Shop Simulator starts at the Workbench, where version 1.0 lets you read the rulebook and build a legal 50-card deck. Once your deck is ready, find a lone customer waiting at a play table, approach them and use the interact prompt to start a match. On PC the official notes list RMB; on gamepad it is the right face button.
A normal match is designed to take around three to five minutes, which is short enough that the store keeps operating in the background while you play. The rules look busy on the first screen, but the win condition is simple: reduce the opponent’s 500 Tamer Points to zero.
How to Start Playing Tetramon
- Reach shop level 7 to unlock the Workbench on a normal 1.0 save.
- Open the Tetramon rulebook at the Workbench if this is your first match.
- Build a 50-card deck; you can use up to four copies of the same named card.
- Find a single customer waiting at one of your play tables.
- Approach the table and use the displayed play input.
- Win by reducing the opponent from 500 Tamer Points to zero.
Build a Legal 50-Card Deck
Deck construction is deliberately strict enough to reward consistency. You need 50 cards and can include no more than four copies of a named card. That makes four copies useful for a Basic or key effect you genuinely want to see, but it does not mean every evolution piece deserves the maximum.
Our best-decks guide focuses on ratios and consistency, while the Best Tetramon Cards guide looks at individual effects worth building around.
Opening Hand and Mulligan
Both players draw five cards. If the entire opening hand is poor, you get one full mulligan: those five go to the bottom, you draw a fresh five and the deck is reshuffled. Use it to find a functional start, not just to chase the rarest card in the list.
What Are the Four Elemental Areas?
The board has Fire, Earth, Water and Wind Elemental Areas. A Tetramon’s attack power combines its own Elemental Power with the power of the area it occupies, so placement is a real combat decision. A card with a useful effect can still be badly positioned if its strongest element is sitting in the wrong lane.
How Evolution Works
Evolution Cards must be placed on the Tetramon they evolve from. A Basic played this turn cannot immediately evolve; it has to survive first. After that delay, you can chain multiple evolutions in the same turn if the required cards are available.
There is another nasty little rule worth learning early: each Elemental Area accepts only one newly played Basic Tetramon per turn, and dropping a new Basic into an occupied area clears what was already there. Do not erase your own evolution line because you were rushing through the Main Phase.
Guardian Cards and Tamer Points
Four cards begin face-down in the Guardian Area. When a player’s Tamer Points cross 400, 300, 200 and 100, the top Guardian card moves into that player’s hand. Damage therefore feeds the losing player resources in stages.
That comeback mechanic is why a lead can turn. If you push the opponent through a threshold, be ready for the extra card rather than assuming the board state will stay the same.
Can You Attack on Turn One?
No. The first turn skips the Attack Phase. From the following turns, you can attack after the Main Phase using the power generated by your Tetramon and their current Elemental Areas.
Winning or losing these short matches does not pause the wider business simulation, so it is worth having stock and staff under control before sitting down during a busy shop day.
Can You Play Against Real People?
No. Version 1.0 is currently built around NPC opponents. OPNeon says player-versus-player Tetramon is not planned in the near future, so the deck system should be treated as a single-player card game inside the shop sim.
The official Xbox Wire guide from OPNeon founder Ding Shen Sia sets out the deck size, mulligan, Guardian system, Elemental Areas and evolution rules, while the final Steam notes explain how to start matches in your shop.
