Cumulative August-September Patch Notes for SimOrg – 2026-09-25 [SIMORG]

Starting every Friday (or as changes warrant), we'll be posting the Patch Notes for SimOrg here on YGOrganization. But first, an introduction in case you haven't heard the news:

SimOrg is a manual simulator for various forms of Yu-Gi-Oh!, including the TCG, OCG, and Rush Duel products. In addition, it has cardpools and modes for virtually every format you can think of, from the early days of Critter, Warrior, and Goat format, through to current Advanced, Genesys, and Domain formats. If you're a Rush Duel fan, RD cards are available as is the Limit Regulation associated with it. Domain players can enjoy multiplayer boards as well, with 2-4 player setups available on demand. SimOrg is free but comes with extra perks if you're subscribed to our Patreon and link your SimOrg account with it via YugiPass!

This first edition of SimOrg Patch Notes is also a compilation of all changes which have been made since the simulator was launched at the start of August. Future updates will be in more contemporary batches. Dates are in order of YYYY-MM-DD.

Now, onto the Patch Notes.

Patch Notes for September 25th 2026 (cumulative from launch)

2026-08-04
- All OCG-only cards have been given English names and text.
- Moving a Defense position Monster to another zone no longer switches it to Attack.
- You can now attach monsters in the GY to Xyz monsters on the field with a new right click option on GY cards which only appears if you control an Xyz monster.
- Spectating and rematches are now possible in Domain Format and Unrated games.
- Profiles and the Deck Builder are no longer confined to Patreon users.
2026-08-05
- Cards with printed stats of "?" were showing "-1". They now show "?" correctly.
- Link Monsters DEF were showing "?". They now show "-" correctly.
- Spells & Traps in the Deck Builder and shared Deck Viewer showed an ATK/DEF of 0. They now show nothing.
- Level stars were scaping with card frame size but the gaps between them weren't. This has been fixed and should hopefully stop the overflow of 12 Star monsters escaping their frames to terrorize the population.
- The Loyalist Gate has been dropped from the /decks page. Users still require a Loyalist account to access the leaderboards, home page, Duel Room, and deck testing features within the Deck Builder.
- Setting the filter in Deck Builder to Genesys now show cards with 0 points properly.
- Search targets for cards like Bonfire now obey the given format.
- Search targets for cards like Bonfire now obey search filter parameters.
- Ascending/descending of search result function has been enabled, but not yet beautified.
- Okay it's beautified now.
- Font has been updated to help renders feel bonita.
- Dice, Token, and Sleeves now always match user themes unless the user has uploaded an image. Also the dice are now more bonita.
2026-08-06
- Nav bar got a little nudge. It was feeling down about itself.
- Some background features have been added. They might break something but you'll never know.
- New F eature: Spawning Cards - In Solo Mode duels only, you can use the lookup tool to spawn cards. Right click the search result and choose "Add to Hand".
2026-08-07
- Deck Builder search got faster. Vroom vroom.
- Overall giant update to the Duel Field and HUD. Please send Neil 1 delicious cup of coffee and a sweet treat via email for his hard work.
- Shareable decklist pages are now a bit more bonita.
2026-08-08
- Duel Field got a glow up per feedback from users.
- Replays now use the new Duel Room setup.
- Duel Room UI has been tweaks for more UI elements to fit at lower resolutions.
- Summoning a monster will no longer blind anyone, we promise.
2026-08-10
- Deck Builder went back to school and did a nightschool course. Decks will now open to their associated format automatically and save it properly, in the correct folders. Old decks will still need to be saved again for this to take.
- Decks now show their format data on the My Decks page and in the Deck Builder.
2026-08-11
- Context menu on cards is now more organized and consistent.
2026-08-12
- Card renders have been improved. No more empty text or missing elements!
- Duel field and the Deck Builder have received significant improvements at 1366x768 resolution.
- Improvements made to large hand size behaviour.
- Fixed the wording when exiting Spectate mode and leaving post-match.
- Added a timer for how frequently users can emote.
- Cards now keep their battle position when control transfers between players.
- Forbidden/Limited/Semi-Limited and Genesys Point corner icons stylized to be larger and look better.
2026-08-13
- Added settings for the controls of the context menu: Right click, left click, and hover.
- Drag-and-drop overlaying has been made live.
2026-08-14
- Movement animations for cards have been added and improved.
- Attack flow changes (click attack -> choose target), then the attack animation happens.
- Added a subtle background animation to make everything more lively.
- Various bugs squashed.
- Added the ability to drag from Deck to draw, as well as to GY or Banishment.
- Improved the XYZ rank-up behaviour so materials stay put.
- More visual themes added.
2026-08-15
- New emote added: 🤚 Response
- Moved emotes to the right side where LP controls used to be.
- Moved LP controls to the avatar area on player's avatar only. Opponent will still see the player's avatar at full size unless using a low resolution device.
- Start-of-Game flow procedures improved.
2026-08-16
- Players can now configure their click behaviour on their main deck.
2026-08-18
- Improved options for context menus including how large the menu will appear while Dueling.
- Context menus also now allow the player to set how many columns it takes up and use a variety of presets for easy setup.
- 2026 Worlds list added just in time for Worlds. This format will be temporary and available every August for that year's specific list.
- Face-Down Banished cards will no longer reveal themselves in chat when returned to Deck.
- Macros have been fixed for several cards and added for Pair Bear Scare and Darklord Eveningstar.
- Please put any requests or bug reports for Macros in the Discord feature request thread marked "Dans Macro Shop".
- New chat commands "banishfd" and "banishd" for banishing the top card(s) of your deck face down are now available.
- Players no longer need to (but still can!) use a space in issuing chat commands (using "mill6" as opposed to "mill 6" or "draw5" as opposed to "draw 5" now works, for example.)
- Speed Duel opening hands now contain 4 cards instead of 5 lmao.
- Rush Duels now autodraw at the start of turn to 5 cards (and stop at 5!)
- Master Duel Rarities are now displayable on cards. Deck costs per Master Duel are also displayed. Please note Master Duel is not a sanctioned format in SimOrg and never will be, it is just available via Unlimited Mode for fun with friends.
- OCG Forbidden & Limited List issues have been resolved and updated.
- Alt arts are now supported.
2026-08-22
- Improvements to various animations, such as cards moving to deck or revealing cards in hand.
- Extra Deck click settings are now customizable like the Main Deck ones.
- Several improvements made to replays, including being able to flip which side you're viewing the match from and being able to click into the GY and Banishment.
2026-08-24
- Duel settings area has been harmonized and improved.
- Profile settings has also received improvement.
2026-08-26
- Double clicking "Concede Game" now works properly.
- Added the option to Side in Solo Mode.
2026-08-28
- Macros added for Enneacraft monsters, Spellbook Library of the Crescent, Super Quantal Fairy Alphan, Martyr of the Sacred Beasts, and Sacred Beasts Thunderclap.
- Genesys points have been updated per the August update.
- 137 Rush Duel cards have been updated per their Spell categories. 50 Field, 48 Equip, and 39 Ritual spells now show proper categorization instead of "Normal".
- 33 cards will now show their old text when applicable in a legacy format, such as Sinister Serpent in Goat.
- Rush Duel now opens 4 cards instead of 5.
- Reconnecting mid-Duel no longer breaks player turn. It was formerly trying to restore gamestate based on who went first rather than whose turn it currently was.
- Cards attached to a monster now go to their owner's Graveyard, rather than who moved the stack.
- Cancelling matchmaking at the exact moment a match is found no longer strands the other player in a lobby that can't start.
- Right clicking and dragging a monster from anywhere other than your hand now places that monster on the field in face-up Defense position instead of face-down.
- Speed Duel skills now show which character they belong to while face-down.
- Chat commands like /mill3 now work in Rush Duel games.
- Targets featured in the Deck Builder no read effect effect on a card, fixing cards like Ulcanix. Some cards like Magician's Rod are too complicated at the moment to implement this feature, but will be fixed shortly.
- YDK exports no longer drop your last Side Deck card.
- Players can now select the artwork for the cards in their deck properly.
- Victory jingles now use the Music volume slider rather than the Sound Effects one.
2026-08-29
- Revealing the Extra Deck now shows the full list of cards within it and pops open in a modal box.
- Stat changes now reset when a card leaves the field.
- Squashed a bug where the GY would break when a player refreshed their browser.
- Data for facedown cards is no longer lost when they change possession.
- The log now properly states whose GY was being viewed by which player.
2026-09-03
- Cards from Magnificent Monsters (MAMO) are now legal for TCG duels (but not for the then-ongoing SimOrg tournament.)
- Cards with Pendulum effects no longer render in the other player's set language by mistake.
- The window in which the right click menu would open has been lengthened when dragging to prevent a duplication bug.
- Right clicking and dragging a card from GY to Banishment will Banish it face-down now.
- Added a macro for Vidolium the Unstable Power Patron of Unity.
- Squashed a bug that was preventing cards sent to the face-up Extra Deck from staying put.
- Switching cards too quickly shouldn't show the old next under the new image anymore.
2026-09-04
- New feature added: Players can now directly measure their decks combo rates using the YGOrg Combo Calculator with a single click in the Export Deck Menu.
- Replays now show entire matches, not just individual duels. Players can also still access individual duels.
- Glorious Victors added to the card pool.
2026-09-12
- Added Attribute and Type support to Tokens
- Added a new feature where players can paste the parenthetical details of a token from its spawner into the token tool and summon a token with those stats.
- Added macros to every single token making card in the game. Every. Single. One. Oh god.
2026-09-16
- Domain Format features brought up to parity with the rest of the site as far as UX is concerned. Still working on more.
- Thank you Neil.
2026-09-20
- Errata versions of Elder Entity Norden and Mind Master have been added.
- 80th Era "RotaryROLAD" (name pending) created.
- Current Advanced format leaderboard migrated to RotaryROLAD leaderboard.
- New Advanced format leaderboard created. All ratings now start at 100.
- New ban list for September 21st 2026 is in effect for that leaderboard as of this date.
2026-09-22
- Thoroughbred Elf, Assault Lion, and Power Connection added to cardpool.
- Added 16 cards from Beyond the Brave's World Premiere batch to cardpool, available in Solo Mode only at this time.

Thus ends SimOrg Patch Notes for September.

Cumulative August-September Patch Notes for SimOrg – 2026-09-25 [SIMORG]

Patch Notes for September 25th 2026 (cumulative from launch)

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