diff --git a/program-architecture.md b/program-architecture.md
index f7e3cf2..75925e5 100644
--- a/program-architecture.md
+++ b/program-architecture.md
@@ -54,6 +54,8 @@ All entities on the server have a unique, unsigned index.
 -------------------------
 ### Server Architecture
 
+#### Modules
+
 * server metadata
 	* name
 	* version
@@ -113,3 +115,22 @@ The client needs to handle the following content.
 * player list
 * monster list
 
+-------------------------
+### Client Architecture
+
+#### Scenes
+
+* SplashScreen: start of the program
+* MainMenu: program hub
+* Options: configuration saved on exit
+* Lobby: find available servers
+	* ping the network
+	* phone home
+* InGame: Control
+* InWorld: the player is on the map
+* InCombat: the player is in combat
+
+#### Modules
+
+* Map Loader
+* player