Mobile trading card adventure
The valley is calling
Discover living card families, challenge other players, trade rare creatures and grow a binder that is uniquely yours.
Collect. Trade. Battle.
Open packs, grow your binder, and trade creatures side-by-side with other SONYEON players.
Welcome to Sonyeon Valley
Your Starter Pack holds six random, gentler creatures from the Base Set—the perfect team for learning the valley.
Your first 12 Aura
Aura is the valley's trading currency. Spend it on cards in the Marketplace, earn more through play and rewards, or save it for the creature you really want.
Pack opened
Follow players to see them here when they are online.
Type at least 2 letters to search.
Online players will appear here as they enter the game.
Your cards
Magical card exchange
No cards match these filters.
Restricted access
Manage players and review site-wide events.
Site-wide
No activity has been recorded yet.
Accounts
No matching player accounts.
Moderation
Accounts restricted by an administrator or the automated moderation system.
There are no flagged or banned accounts.
Family builder
OpenAI creation team
The team works through all 249 remaining Base cards, one card at a time. Each gets one straight progression with a random endpoint; most stop at EVO 3 and only five reach God Pack.
Ready to build the remaining catalogue.
Rare variants and 30 Action cards are ready for the safe queue.
Card catalogue
Every Base card and live evolution, ordered by family.
Mark's card studio
Create one card or build a complete Limited Edition themed deck. Every generated artwork file is compressed to lightweight WebP.
Saved work
Editable draft
Step 1
Saved deck projects
Approval and review
Complete catalogue
Aura economy
Mark test battle
Preview the three looping themes used exclusively in Mark's test battle. These controls do not enable music in public battles.
Card artwork
Chest opened
Swipe the reward away or press Next
The chest is opening…
Your journey
Travel upward through ten regions. Win each stop to unlock the next.
Banning disables sign-in and revokes active sessions.
Select one of ten illustrated player portraits. You can change it whenever you like.
The trading post
Connected. Add cards to begin.
No cards offered yet.
Choose at least one card.
Trade complete
Tap a card to preview it, then add or remove it from your offer.
Prepare your team
Choose six cards from your collection, followed by your Action cards.
The battlefield is being rebuilt carefully. Your selection is saved on this device and no battle, XP or card changes will begin yet.
1 of 6Swipe cards left or right
Waiting for both teams.
Battle complete
This exact card has enough XP to evolve.
Preview battle — XP and evolutions were not saved.
Tap six creature cards to place them on the battlefield.
Marketplace
