diff --git a/src/main/resources/META-INF/accesstransformer.cfg b/src/main/resources/META-INF/accesstransformer.cfg
index e765c63f8a..104c928f19 100644
--- a/src/main/resources/META-INF/accesstransformer.cfg
+++ b/src/main/resources/META-INF/accesstransformer.cfg
@@ -280,6 +280,10 @@ public net.minecraft.world.item.crafting.Ingredient$TagValue
 public net.minecraft.world.item.crafting.Ingredient$TagValue <init>(Lnet/minecraft/tags/TagKey;)V # constructor
 public net.minecraft.world.item.crafting.Ingredient$Value
 public net.minecraft.world.level.GameRules m_46189_(Ljava/lang/String;Lnet/minecraft/world/level/GameRules$Category;Lnet/minecraft/world/level/GameRules$Type;)Lnet/minecraft/world/level/GameRules$Key; # register
+public net.minecraft.world.level.GameRules$BooleanValue m_46252_(ZLjava/util/function/BiConsumer;)Lnet/minecraft/world/level/GameRules$Type; # create
+public net.minecraft.world.level.GameRules$BooleanValue m_46250_(Z)Lnet/minecraft/world/level/GameRules$Type; # create
+public net.minecraft.world.level.GameRules$IntegerValue m_46294_(ILjava/util/function/BiConsumer;)Lnet/minecraft/world/level/GameRules$Type; # create
+public net.minecraft.world.level.GameRules$IntegerValue m_46312_(I)Lnet/minecraft/world/level/GameRules$Type; # create
 public net.minecraft.world.level.Level f_46437_ # oRainLevel
 public net.minecraft.world.level.Level f_46438_ # rainLevel
 public net.minecraft.world.level.Level f_46439_ # oThunderLevel
diff --git a/src/test/java/net/minecraftforge/debug/CustomGameRuleTest.java b/src/test/java/net/minecraftforge/debug/CustomGameRuleTest.java
new file mode 100644
index 0000000000..17e44a5f32
--- /dev/null
+++ b/src/test/java/net/minecraftforge/debug/CustomGameRuleTest.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) Forge Development LLC and contributors
+ * SPDX-License-Identifier: LGPL-2.1-only
+ */
+
+package net.minecraftforge.debug;
+
+import net.minecraft.world.level.GameRules;
+import net.minecraftforge.fml.common.Mod;
+
+/**
+ * Simple test to ensure custom game rules can be registered correctly and used in game.
+ * <p>
+ * To test these game rules use the following commands.
+ * <br>If the game rules are registered correctly, they should show up as auto-completion values and be able to be changed to valid values based on their types.
+ * <br>These game rules should also show up and be editable under the {@code Edit Game Rules} screen, when creating a new world.
+ * <br>{@code Create new world > More (tab) > Game Rules > Misc}
+ * <ul>
+ *     <li><pre>{@code /gamerule custom_game_rule_test:custom_boolean_game_rule <true|false>}</pre></li>
+ *     Should be able to be set to either {@code true} or {@code false} (Defaulting to {@code true}).
+ *
+ *     <li><pre>{@code /gamerule custom_game_rule_test:custom_integer_game_rule <some integer>}</pre></li>
+ *     Should be able to be set to any integer value (Defaulting to {@code 1337}).
+ * </ul>
+ */
+@Mod(CustomGameRuleTest.TEST_ID)
+public class CustomGameRuleTest
+{
+    public static final String TEST_ID = "custom_game_rule_test";
+    public static final GameRules.Key<GameRules.BooleanValue> CUSTOM_BOOLEAN_GAME_RULE = GameRules.register("%s:custom_boolean_game_rule".formatted(TEST_ID), GameRules.Category.MISC, GameRules.BooleanValue.create(true));
+    public static final GameRules.Key<GameRules.IntegerValue> CUSTOM_INTEGER_GAME_RULE = GameRules.register("%s:custom_integer_game_rule".formatted(TEST_ID), GameRules.Category.MISC, GameRules.IntegerValue.create(1337));
+}
diff --git a/src/test/resources/META-INF/mods.toml b/src/test/resources/META-INF/mods.toml
index 8a1fe56f7d..75c14c3962 100644
--- a/src/test/resources/META-INF/mods.toml
+++ b/src/test/resources/META-INF/mods.toml
@@ -28,6 +28,8 @@ modId="mdk_datagen"
     modId="crash_callable_test"
 [[mods]]
     modId="deferred_work_queue_test"
+[[mods]]
+    modId="custom_game_rule_test"
 
 # LEGACY TEST CASES
 ###### The mods below are from the old test framework and need to be yeeted later again.