diff --git a/src/engine/behavior_script.c b/src/engine/behavior_script.c
index 7c39a339..40bda1ed 100644
--- a/src/engine/behavior_script.c
+++ b/src/engine/behavior_script.c
@@ -13,6 +13,7 @@
 #include "game/object_list_processor.h"
 #include "graph_node.h"
 #include "surface_collision.h"
+#include "pc/network/network.h"
 
 // Macros for retrieving arguments from behavior scripts.
 #define BHV_CMD_GET_1ST_U8(index)  (u8)((gCurBhvCommand[index] >> 24) & 0xFF) // unused
@@ -63,7 +64,12 @@ void force_replicable_seed(u8 always) {
 // Generate a pseudorandom integer from 0 to 65535 from the random seed, and update the seed.
 u16 random_u16(void) {
     // override this function for synchronized entities
-    if (gCurrentObject->oSyncID != 0) { force_replicable_seed(FALSE); }
+    if (gCurrentObject->oSyncID != 0) {
+        struct SyncObject* so = &syncObjects[gCurrentObject->oSyncID];
+        if (so->o != NULL && !so->keepRandomSeed) {
+            force_replicable_seed(FALSE);
+        }
+    }
 
     u16 temp1, temp2;
 
diff --git a/src/game/behaviors/bowling_ball.inc.c b/src/game/behaviors/bowling_ball.inc.c
index f1e16cb1..0e11e565 100644
--- a/src/game/behaviors/bowling_ball.inc.c
+++ b/src/game/behaviors/bowling_ball.inc.c
@@ -180,41 +180,69 @@ void bhv_generic_bowling_ball_spawner_init(void) {
 }
 
 void bhv_generic_bowling_ball_spawner_loop(void) {
+    if (o->oSyncID == 0) {
+        network_init_object(o, SYNC_DISTANCE_ONLY_EVENTS);
+        network_object_settings(o, FALSE, 0, TRUE);
+    }
+
     struct Object *bowlingBall;
 
     if (o->oTimer == 256)
         o->oTimer = 0;
 
+    struct Object* player = nearest_player_to_object(o);
+
     if (is_point_within_radius_of_mario(o->oPosX, o->oPosY, o->oPosZ, 1000)
-        || (o->oPosY < gMarioObject->header.gfx.pos[1]))
+        || (o->oPosY < player->header.gfx.pos[1]))
         return;
 
     if ((o->oTimer & o->oBBallSpawnerPeriodMinus1) == 0) /* Modulus */
     {
         if (is_point_within_radius_of_mario(o->oPosX, o->oPosY, o->oPosZ, o->oBBallSpawnerMaxSpawnDist)) {
             if ((s32)(random_float() * o->oBBallSpawnerSpawnOdds) == 0) {
+                if (!network_owns_object(o)) {
+                    return;
+                }
+                // this branch only runs for one player at a time
                 bowlingBall = spawn_object(o, MODEL_BOWLING_BALL, bhvBowlingBall);
                 bowlingBall->oBehParams2ndByte = o->oBehParams2ndByte;
+
+                // send out the bowlingBall object
+                struct Object* spawn_objects[] = { bowlingBall };
+                u32 models[] = { MODEL_BOWLING_BALL };
+                network_send_spawn_objects(spawn_objects, models, 1);
             }
         }
     }
 }
 
 void bhv_thi_bowling_ball_spawner_loop(void) {
+    if (o->oSyncID == 0) {
+        network_init_object(o, SYNC_DISTANCE_ONLY_EVENTS);
+        network_object_settings(o, FALSE, 0, TRUE);
+    }
+
     struct Object *bowlingBall;
+    struct Object* player = nearest_player_to_object(o);
 
     if (o->oTimer == 256)
         o->oTimer = 0;
 
     if (is_point_within_radius_of_mario(o->oPosX, o->oPosY, o->oPosZ, 800)
-        || (o->oPosY < gMarioObject->header.gfx.pos[1]))
+        || (o->oPosY < player->header.gfx.pos[1]))
         return;
 
     if ((o->oTimer % 64) == 0) {
         if (is_point_within_radius_of_mario(o->oPosX, o->oPosY, o->oPosZ, 12000)) {
-            if ((s32)(random_float() * 1.5) == 0) {
+            if (network_owns_object(o) && (s32)(random_float() * 1.5) == 0) {
+                // this branch only runs for one player at a time
                 bowlingBall = spawn_object(o, MODEL_BOWLING_BALL, bhvBowlingBall);
                 bowlingBall->oBehParams2ndByte = o->oBehParams2ndByte;
+
+                // send out the bowlingBall object
+                struct Object* spawn_objects[] = { bowlingBall };
+                u32 models[] = { MODEL_BOWLING_BALL };
+                network_send_spawn_objects(spawn_objects, models, 1);
             }
         }
     }
@@ -224,6 +252,9 @@ void bhv_bob_pit_bowling_ball_init(void) {
     o->oGravity = 12.0f;
     o->oFriction = 1.0f;
     o->oBuoyancy = 2.0f;
+
+    network_init_object(o, 5000.0f);
+    network_object_settings(o, FALSE, 5.0f, TRUE);
 }
 
 void bhv_bob_pit_bowling_ball_loop(void) {
diff --git a/src/game/behaviors/checkerboard_platform.inc.c b/src/game/behaviors/checkerboard_platform.inc.c
index 55ffeac7..2eec54c5 100644
--- a/src/game/behaviors/checkerboard_platform.inc.c
+++ b/src/game/behaviors/checkerboard_platform.inc.c
@@ -46,7 +46,7 @@ void checkerboard_plat_act_rotate(s32 a0, s16 a1) {
 void bhv_checkerboard_platform_init(void) {
     o->oCheckerBoardPlatformUnkFC = o->parentObj->oBehParams2ndByte;
     network_init_object(o, 1000.0f);
-    network_object_settings(o, TRUE, 5.0f);
+    network_object_settings(o, TRUE, 5.0f, TRUE);
 }
 
 void bhv_checkerboard_platform_loop(void) {
diff --git a/src/game/behaviors/water_bomb.inc.c b/src/game/behaviors/water_bomb.inc.c
index 5254b9c7..3485e9d2 100644
--- a/src/game/behaviors/water_bomb.inc.c
+++ b/src/game/behaviors/water_bomb.inc.c
@@ -33,6 +33,7 @@ void bhv_water_bomb_spawner_update(void) {
         network_init_object(o, SYNC_DISTANCE_ONLY_EVENTS);
         network_init_object_field(o, &o->oWaterBombSpawnerBombActive);
         network_init_object_field(o, &o->oWaterBombSpawnerTimeToSpawn);
+        network_object_settings(o, FALSE, 0, TRUE);
     }
 
     f32 latDistToMario = 9999;
diff --git a/src/pc/network/network.h b/src/pc/network/network.h
index 2af8db79..bc02a052 100644
--- a/src/pc/network/network.h
+++ b/src/pc/network/network.h
@@ -43,6 +43,7 @@ struct SyncObject {
     u16 onEventId;
     u8 extraFieldCount;
     bool fullObjectSync;
+    bool keepRandomSeed;
     float maxUpdateRate;
     void* extraFields[MAX_SYNC_OBJECT_FIELDS];
 };
@@ -55,7 +56,7 @@ extern struct SyncObject syncObjects[];
 
 void network_init(enum NetworkType networkType);
 void network_init_object(struct Object *object, float maxSyncDistance);
-void network_object_settings(struct Object *object, bool fullObjectSync, float maxUpdateRate);
+void network_object_settings(struct Object *object, bool fullObjectSync, float maxUpdateRate, bool keepRandomSeed);
 void network_send(struct Packet* p);
 void network_update(void);
 void network_shutdown(void);
diff --git a/src/pc/network/packets/packet_object.c b/src/pc/network/packets/packet_object.c
index a694a2d0..469e709e 100644
--- a/src/pc/network/packets/packet_object.c
+++ b/src/pc/network/packets/packet_object.c
@@ -27,15 +27,17 @@ void network_init_object(struct Object *o, float maxSyncDistance) {
     so->behavior = o->behavior;
     so->onEventId = 0;
     so->fullObjectSync = false;
+    so->keepRandomSeed = false;
     so->maxUpdateRate = 0;
     memset(so->extraFields, 0, sizeof(void*) * MAX_SYNC_OBJECT_FIELDS);
 }
 
-void network_object_settings(struct Object *o, bool fullObjectSync, float maxUpdateRate) {
+void network_object_settings(struct Object *o, bool fullObjectSync, float maxUpdateRate, bool keepRandomSeed) {
     assert(o->oSyncID != 0);
     struct SyncObject* so = &syncObjects[o->oSyncID];
     so->fullObjectSync = fullObjectSync;
     so->maxUpdateRate = maxUpdateRate;
+    so->keepRandomSeed = keepRandomSeed;
 }
 
 void network_init_object_field(struct Object *o, void* field) {