diff --git a/Resources/Prototypes/GameRules/events.yml b/Resources/Prototypes/GameRules/events.yml
index fc24b280363..b945bbfd5cf 100644
--- a/Resources/Prototypes/GameRules/events.yml
+++ b/Resources/Prototypes/GameRules/events.yml
@@ -51,10 +51,12 @@
   parent: BaseGameRule
   abstract: true
   components:
-  - type: GameRule
-    delay:
-      min:  10
-      max:  20
+    - type: GameRule
+      delay:
+# Corvax-MRP-Start
+        min:  610 # 10 min
+        max:  900 # 15 min
+# Corvax-MRP-End
 
 - type: entity
   id: BaseStationEventLongDelay
@@ -159,8 +161,10 @@
   id: DragonSpawn
   components:
   - type: StationEvent
-    weight: 6.5
-    earliestStart: 40
+  #Corvax-MRP
+    weight: 4.5
+    earliestStart: 80
+  #Corvax-MRP
     reoccurrenceDelay: 20
     minimumPlayers: 20
     duration: null
@@ -467,8 +471,10 @@
   id: LoneOpsSpawn
   components:
   - type: StationEvent
+  #Corvax-MRP-Start
     earliestStart: 35
-    weight: 5.5
+    weight: 4.5
+  #Corvax-MRP-End
     minimumPlayers: 20
     duration: 1
   - type: RuleGrids
diff --git a/Resources/Prototypes/GameRules/roundstart.yml b/Resources/Prototypes/GameRules/roundstart.yml
index 3a53dbe2d91..83f32ac8dd8 100644
--- a/Resources/Prototypes/GameRules/roundstart.yml
+++ b/Resources/Prototypes/GameRules/roundstart.yml
@@ -4,6 +4,15 @@
   components:
   - type: GameRule
 
+#Corvax-MRP-Start
+- type: entity
+  parent: BaseGameRule
+  id: SurvivalGameRule
+  components:
+  - type: GameRule
+    minPlayers: 20
+#Corvax-MRP-End
+
 - type: entity
   parent: BaseGameRule
   id: RespawnDeadRule
@@ -282,7 +291,7 @@
         tableId: CalmPestEventsTable
       - !type:NestedSelector
         tableId: SpicyPestEventsTable
-        
+
 
 - type: entityTable
   id: SpaceTrafficControlTable
@@ -302,6 +311,12 @@
   - type: BasicStationEventScheduler
     scheduledGameRules: !type:NestedSelector
       tableId: BasicGameRulesTable
+    #Corvax-MRP-Start
+    minimumTimeUntilFirstEvent: 600 # 10 mins
+    minMaxEventTiming:
+      min: 610 # 7 mins
+      max: 900 # 15 mins
+    #Corvax-MRP-End
 
 - type: entity
   id: RampingStationEventScheduler
diff --git a/Resources/Prototypes/game_presets.yml b/Resources/Prototypes/game_presets.yml
index 0804dc71540..f4f06fe45d5 100644
--- a/Resources/Prototypes/game_presets.yml
+++ b/Resources/Prototypes/game_presets.yml
@@ -11,6 +11,7 @@
     - SpaceTrafficControlEventScheduler
     - SpaceTrafficControlFriendlyEventScheduler
     - BasicRoundstartVariation
+    - SurvivalGameRule #Corvax-MRP
 
 - type: gamePreset
   id: KesslerSyndrome
@@ -91,7 +92,7 @@
   showInVote: false #4boring4vote
   description: greenshift-description
   rules:
-  - SpaceTrafficControlFriendlyEventScheduler 
+  - SpaceTrafficControlFriendlyEventScheduler
   - BasicRoundstartVariation
 
 - type: gamePreset
@@ -126,7 +127,7 @@
   showInVote: false #Admin Use
   description: secret-description
   rules:
-  - SpaceTrafficControlFriendlyEventScheduler 
+  - SpaceTrafficControlFriendlyEventScheduler
   - BasicRoundstartVariation
 
 - type: gamePreset