diff --git a/LICENSE-ROXAS2712.md b/LICENSE-ROXAS2712.md
new file mode 100644
index 000000000..fbcffd47c
--- /dev/null
+++ b/LICENSE-ROXAS2712.md
@@ -0,0 +1,88 @@
+# Roxas2712 — Fork Contributions
+
+Version 1.0 · Effective 25 October 2026
+
+Copyright © 2026 Roxas2712, to the extent of rights held.
+All rights reserved except as expressly granted below or already granted.
+
+## 1. Scope and ownership
+
+This notice applies only to original contributions made by Roxas2712
+(GitHub: Roxas2712) to `Roxas2712/Gen2Recomped`, including original additions
+within modified files, insofar as he owns the relevant rights. Git history,
+pull-request diffs and source provenance identify contributions; a commit
+author or a whole-file change alone does not establish ownership of every
+part of that file.
+
+It does not claim ownership of Cedric's work, Gen1Recomp / BOIS CLUB GAMES
+work, other contributors' work, third-party dependencies, or ROM-derived
+content. Their applicable licences and notices remain in force. It does not
+grant permission to distribute the complete combined fork where another
+rights holder's permission is required.
+
+## 2. General permission and reserved rights
+
+For contributions covered by this notice and not already licensed more
+broadly, you may read and study the published source and make private,
+non-commercial modifications and builds for your own use. This grants no
+general permission to redistribute, sublicense, sell, or offer those
+contributions as a hosted service. Other uses require Roxas2712's
+written permission, except for the specific permission below and rights
+available independently under applicable law.
+
+Keep the relevant copyright, licence and attribution notices. Do not
+represent Roxas2712's contributions as exclusively authored by someone
+else. Public source availability alone does not put them in the public
+domain or grant an open-source licence.
+
+## 3. Specific permission for Cedric / UNDERdecoded
+
+Roxas2712 expressly grants Cedric (Ced; GitHub: UNDERdecoded /
+UNDERdecodedHD) a non-exclusive, worldwide, perpetual, royalty-free
+permission to use, reproduce, integrate, modify and distribute the covered
+contributions that Roxas2712 submits or expressly offers through pull
+requests to `UNDERdecoded/Gen2Recomped`, for Cedric's Gen2Recomped /
+RetroRecompiled project. This includes its renamed continuation maintained
+by Cedric, its official builds, and its commercial operation.
+
+Cedric may license the incorporated contributions to recipients as part of
+that project, subject to preserving this permission's applicable credit and
+notice requirements. This permission is not a copyright assignment, is not
+exclusive, and does not cover unpublished work, separate repositories,
+ModCompass service operation, credentials, or content not offered in those
+pull requests. Roxas2712 retains his own rights to his contributions.
+
+For uses relying on this permission:
+
+- retain the relevant source copyright and licence notices;
+- give visible credit in the project's README or equivalent public project
+  page, and in the application's existing About / Credits view, if present;
+- use at least the following credit, or a substantially equivalent one:
+
+  > Contributions by Roxas2712 —
+  > https://github.com/Roxas2712
+
+A maintained consolidated contributor credit is sufficient; a separate
+credit on every screen or for every change is not required. Adapted
+contributions must not be attributed exclusively to another author. Other
+contributors' credits must also remain intact.
+
+## 4. Earlier licences and permissions remain effective
+
+This notice does not revoke, narrow, or retrospectively add conditions to
+any permission already validly granted, including MIT / GPL grants,
+separate agreements, or permissions arising from previously submitted
+pull requests. Where an earlier grant permits a use independently of this
+notice, its existing terms govern that use. For such earlier uses, the
+visible credit above is requested to the extent it is not already required.
+
+For subsequent contributions, this is the default statement of Roxas2712's own reserved rights and the specific PR permission, subject to any
+applicable existing licence obligations or separately agreed terms. It
+does not change another rights holder's licence or guarantee compatibility
+of a particular combination of code.
+
+## 5. No warranty
+
+To the extent permitted by applicable law, these contributions are provided
+as is, without warranty. No support obligation, endorsement, or rights to
+third-party code, game assets, names, or trademarks are granted.
diff --git a/src/ui/OptionsMenu.lua b/src/ui/OptionsMenu.lua
index d6d1f500d..7daa525de 100644
--- a/src/ui/OptionsMenu.lua
+++ b/src/ui/OptionsMenu.lua
@@ -311,7 +311,10 @@ local function buildRows(game)
         -- DEFAULT is index 0 and the list is 1..#SHINY_ODDS, so the wrap is
         -- over #SHINY_ODDS + 1 values and lands back on DEFAULT past the end
         local i = (shinyOddsIndex(g) + (dir or 1)) % (#SHINY_ODDS + 1)
-        o.shinyOdds = i == 0 and nil or SHINY_ODDS[i]
+        -- Keep DEFAULT explicit in options.lua. Removing this key from the
+        -- live table leaves the previous stored rate in GenOptions.fold,
+        -- so reloading could turn the extra shiny roll back on.
+        o.shinyOdds = i == 0 and 0 or SHINY_ODDS[i]
         return true
       end },
     { id = "musicVol", label = Strings("MUSIC VOL"),
diff --git a/tests/engine/option_default_persistence.lua b/tests/engine/option_default_persistence.lua
new file mode 100644
index 000000000..7f8fff5b9
--- /dev/null
+++ b/tests/engine/option_default_persistence.lua
@@ -0,0 +1,64 @@
+-- Copyright (c) 2026 Roxas2712. See LICENSE-ROXAS2712.md.
+-- Exercise the real row, input routing, generation fold and options file.
+package.path='./?.lua;./?/init.lua;'..package.path
+local T=require('tests.modkit')
+local Version=require('src.core.GameVersion')
+local Menu=require('src.ui.OptionsMenu')
+local Stack=require('src.core.StateStack')
+local Save=require('src.core.SaveData')
+local Pokemon=require('src.pokemon.Pokemon')
+local original=Version.get()
+local function press(game,key)
+ game.input.pressed={[key]=true};game.stack:top():update(1/60);game.input.pressed={}
+end
+local function selectOdds(game,root)
+ for _=1,#root.rows+2 do
+  local row=root.rows[root.index]
+  if row and row.id=='shinyOdds'then return root end
+  press(game,'down')
+ end
+ error('native SHINY ODDS row is unreachable')
+end
+for _,edition in ipairs({'red','gold','silver','crystal','emerald'})do
+ Version.set(edition)
+ local generation=Version.generation()
+ for _,overridden in ipairs({false,true})do
+  local fs=T.sdk.memfs({})
+  local stored=Save.defaultOptions()
+  stored.shinyOdds=overridden and 4096 or 1
+  if overridden then stored.perGeneration={[generation]={shinyOdds=1}}end
+  T.check(type(Save.saveOptions(stored,fs))=='table','seed previous ALWAYS selection')
+  local g={data=T.fixtures.fresh(),save={options=Save.optionsFor(edition,fs)},input={pressed={}},writes=0}
+  g.input.wasPressed=function(self,key)return self.pressed[key]==true end
+  g.stack=setmetatable({}, {__index=Stack});g.stack:init()
+  g.writeOptions=function(self)
+   self.writes=self.writes+1
+   T.check(type(Save.saveOptions(self.save.options,fs,generation))=='table','native options write succeeds')
+  end
+  local root=Menu.new(g);g.stack:push(root)
+  local page=selectOdds(g,root)
+  T.eq(page.rows[page.index].value(g),'ALWAYS','actual row starts on stored ALWAYS')
+  press(g,'right')
+  T.eq(page.rows[page.index].value(g),'DEFAULT','normal input selects cartridge default')
+  T.eq(Pokemon.shinyOddsOf(g.save),nil,'default disables extra shiny roll immediately')
+  local loaded={options=Save.optionsFor(edition,fs)}
+  T.eq(Pokemon.shinyOddsOf(loaded),nil,'default remains disabled after loading options file')
+  T.eq(page.rows[page.index].value({save=loaded}),'DEFAULT','fresh menu cannot resurrect ALWAYS')
+  if overridden then
+   local persisted=Save.loadOptions(fs)
+   T.eq(persisted.shinyOdds,4096,'generation reset preserves shared extra-roll setting')
+   local other=generation==1 and 'gold' or 'red'
+   T.eq(Pokemon.shinyOddsOf({options=Save.optionsFor(other,fs)}),4096,'other generation retains its selected rate')
+  end
+  -- Start another menu from reloaded bytes: Left reaches ALWAYS and A wraps
+  -- back to the default through the same native input owner.
+  g.save=loaded;g.stack:init();root=Menu.new(g);g.stack:push(root)
+  page=selectOdds(g,root);press(g,'left')
+  T.eq(Pokemon.shinyOddsOf({options=Save.optionsFor(edition,fs)}),1,'left from persisted DEFAULT reaches ALWAYS')
+  press(g,'a')
+  T.eq(Pokemon.shinyOddsOf({options=Save.optionsFor(edition,fs)}),nil,'A also persists the return to DEFAULT')
+  T.eq(g.writes,3,'each accepted selection writes once')
+ end
+end
+Version.set(original)
+T.finish('native default option persistence through shared and generation settings')