diff --git a/source/game/game_engine.c b/source/game/game_engine.c
index 6abcf150..5efd72ae 100644
--- a/source/game/game_engine.c
+++ b/source/game/game_engine.c
@@ -543,10 +543,12 @@ symbols in this file:
 
 #include "game_globals.h"
 #include "interface/ui_widget.h"
+#include "input/input.h"
 #include "items/weapon_definitions.h"
 #include "items/weapons.h"
 #include "main/main.h"
 #include "networking/network_game_globals.h"
+#include "networking/network_server_manager.h"
 #include "objects.h"
 #include "player_rumble.h"
 #include "players.h"
@@ -584,7 +586,7 @@ struct game_engine_globals
 	unsigned long flags;
 	byte unused4[4];
 	real postgame_timer;
-	byte unusedC[4];
+	real postgame_progress;
 	long postgame_state;
 	real hud_message_timers[MAXIMUM_LOCAL_PLAYERS];
 };
@@ -605,6 +607,8 @@ typedef char verify_postgame_statistic_entry_size[
 typedef char verify_game_engine_goal_size[sizeof(struct game_engine_goal) == 0x20 ? 1 : -1];
 typedef char verify_game_engine_globals_postgame_timer_offset[
 	offsetof(struct game_engine_globals, postgame_timer) == 0x8 ? 1 : -1];
+typedef char verify_game_engine_globals_postgame_progress_offset[
+	offsetof(struct game_engine_globals, postgame_progress) == 0xC ? 1 : -1];
 typedef char verify_game_engine_globals_postgame_state_offset[
 	offsetof(struct game_engine_globals, postgame_state) == 0x10 ? 1 : -1];
 typedef char verify_game_engine_globals_hud_message_timers_offset[
@@ -833,6 +837,27 @@ static boolean code_00097840(
 	return result;
 }
 
+static boolean code_00099880(
+	long button_index)
+{
+	boolean result = FALSE;
+	long gamepad_index;
+
+	for (gamepad_index = 0; gamepad_index < 4; gamepad_index++)
+	{
+		struct gamepad_state const *gamepad_state =
+			input_get_gamepad_state((short)gamepad_index);
+
+		if (gamepad_state && gamepad_state->buttons[button_index])
+		{
+			result = TRUE;
+			break;
+		}
+	}
+
+	return result;
+}
+
 boolean code_00097c00(
 	void)
 {
@@ -1312,6 +1337,43 @@ void game_engine_nonplayer_post_rasterize(
 	return;
 }
 
+void game_engine_update_non_deterministic(
+	real delta_seconds)
+{
+	if (game_engine)
+	{
+		switch (game_engine_globals.postgame_state)
+		{
+		case 2:
+			rumble_clear_all_now();
+			game_engine_globals.postgame_timer -= delta_seconds;
+			if (game_engine_globals.postgame_timer <= 0.0f)
+				game_engine_globals.postgame_state = 3;
+			break;
+
+		case 3:
+			rumble_clear_all_now();
+			game_engine_globals.postgame_progress += delta_seconds;
+			if (game_engine_globals.postgame_progress > 1.0f)
+				game_engine_globals.postgame_progress = 1.0f;
+
+			if (code_00099880(0) || code_00099880(12))
+			{
+				if (global_network_game_server_get())
+				network_game_server_reset_to_pregame(
+					global_network_game_server_get());
+			}
+			else if (code_00099880(1) || code_00099880(13))
+			{
+				network_game_abort();
+			}
+			break;
+		}
+	}
+
+	return;
+}
+
 boolean game_engine_display_team_indicators(
 	void)
 {
diff --git a/source/game/game_engine.h b/source/game/game_engine.h
index 4b9cf194..8881171e 100644
--- a/source/game/game_engine.h
+++ b/source/game/game_engine.h
@@ -219,6 +219,9 @@ void game_engine_post_rasterize(
 void game_engine_nonplayer_post_rasterize(
 	void);
 
+void game_engine_update_non_deterministic(
+	float delta_seconds);
+
 void game_engine_initialize(
 	struct game_variant *variant);
 
diff --git a/source/game/player_rumble.h b/source/game/player_rumble.h
index e25ac236..37cf77d9 100644
--- a/source/game/player_rumble.h
+++ b/source/game/player_rumble.h
@@ -20,5 +20,7 @@ void rumble_player_set_scripted_values(
 	real right_motor);
 void rumble_player_clear(
 	short local_player_index);
+void rumble_clear_all_now(
+	void);
 
 #endif // __PLAYER_RUMBLE_H
diff --git a/source/networking/network_server_manager.h b/source/networking/network_server_manager.h
index 3cb0f850..fc26597a 100644
--- a/source/networking/network_server_manager.h
+++ b/source/networking/network_server_manager.h
@@ -14,7 +14,12 @@ header included in hcex build.
 
 /* ---------- structures */
 
-/* ---------- prototypes/EXAMPLE.C */
+/* ---------- prototypes/NETWORK_SERVER_MANAGER.C */
+
+struct network_game_server;
+
+void network_game_server_reset_to_pregame(
+	struct network_game_server *server);
 
 /* ---------- globals */