diff --git a/data/manifest.yaml b/data/manifest.yaml
index 8a4614b1..71f1c4f7 100644
--- a/data/manifest.yaml
+++ b/data/manifest.yaml
@@ -158063,6 +158063,11 @@ Downfall:
         - os: linux
   gog:
     id: 1455298654
+  id:
+    gogExtra:
+      - 1455290087
+    steamExtra:
+      - 436790
   installDir:
     Downfall: {}
   launch:
diff --git a/data/steam-game-cache.yaml b/data/steam-game-cache.yaml
index e9812547..2b3a5efb 100644
--- a/data/steam-game-cache.yaml
+++ b/data/steam-game-cache.yaml
@@ -75386,12 +75386,12 @@
     - config:
         oslist: windows
       description: Launch Downfall (2009 freeware version - English)
-      executable: "downfall_2009\\\\Downfall.exe"
+      executable: "downfall_2009\\Downfall.exe"
       type: none
     - config:
         oslist: windows
       description: Setup Downfall (2009 freeware version - English)
-      executable: "downfall_2009\\\\winsetup.exe"
+      executable: "downfall_2009\\winsetup.exe"
       type: none
     - config:
         oslist: linux
diff --git a/data/wiki-game-cache.yaml b/data/wiki-game-cache.yaml
index f01f80f4..abf089c2 100644
--- a/data/wiki-game-cache.yaml
+++ b/data/wiki-game-cache.yaml
@@ -46893,8 +46893,12 @@ Downbreak:
   steam: 667790
 Downfall:
   gog: 1455298654
+  gogSide:
+    - 1455290087
   pageId: 34402
   steam: 364390
+  steamSide:
+    - 436790
   templates:
     - "{{Game data/config|Windows|{{p|game}}\\acsetup.cfg}}"
     - "{{Game data/config|Steam|{{p|userprofile}}\\Saved Games\\Downfall (2016) Steam\\acsetup.cfg}}"