diff --git a/src/game/behaviors/breakable_box_small.inc.c b/src/game/behaviors/breakable_box_small.inc.c
index fc4ec33b..b0de7edb 100644
--- a/src/game/behaviors/breakable_box_small.inc.c
+++ b/src/game/behaviors/breakable_box_small.inc.c
@@ -21,6 +21,8 @@ void bhv_breakable_box_small_init(void) {
     o->oAnimState = 1;
     o->activeFlags |= ACTIVE_FLAG_UNK9;
     network_init_object(o, 500.0f);
+    network_init_object_field(o, &o->oBreakableBoxSmallReleased);
+    network_init_object_field(o, &o->oBreakableBoxSmallFramesSinceReleased);
 }
 
 void small_breakable_box_spawn_dust(void) {
diff --git a/src/game/mario.c b/src/game/mario.c
index 30d0673d..59ed5585 100644
--- a/src/game/mario.c
+++ b/src/game/mario.c
@@ -1232,7 +1232,7 @@ void squish_mario_model(struct MarioState *m) {
             else {
                 vec3f_set(m->marioObj->header.gfx.scale, 1.0f, 1.0f, 1.0f);
             }
-            
+
         }
         // If timer is less than 16, rubber-band Mario's size scale up and down.
         else if (m->squishTimer <= 16) {
@@ -1421,7 +1421,7 @@ void update_mario_inputs(struct MarioState *m) {
     update_mario_geometry_inputs(m);
 
     debug_print_speed_action_normal(m);
-    
+
     /* Moonjump cheat */
     while (Cheats.MoonJump == true && Cheats.EnableCheats == true && m->controller->buttonDown & L_TRIG ){
         m->vel[1] = 25;
@@ -1536,7 +1536,12 @@ void update_mario_health(struct MarioState *m) {
             m->health = 0x880;
         }
         if (m->health < 0x100) {
-            m->health = 0xFF;
+            if (m != &gMarioStates[0]) {
+                // never kill remote marios
+                m->health = 0x100;
+            } else {
+                m->health = 0xFF;
+            }
         }
 
         // Play a noise to alert the player when Mario is close to drowning.
diff --git a/src/game/mario_actions_airborne.c b/src/game/mario_actions_airborne.c
index 970e45f3..5563d531 100644
--- a/src/game/mario_actions_airborne.c
+++ b/src/game/mario_actions_airborne.c
@@ -985,9 +985,14 @@ s32 act_burning_jump(struct MarioState *m) {
 
     m->health -= 10;
     if (m->health < 0x100) {
-        m->health = 0xFF;
+        if (m != &gMarioStates[0]) {
+            // never kill remote marios
+            m->health = 0x100;
+        } else {
+            m->health = 0xFF;
+        }
     }
-    
+
     reset_rumble_timers();
     return FALSE;
 }
@@ -1006,7 +1011,12 @@ s32 act_burning_fall(struct MarioState *m) {
 
     m->health -= 10;
     if (m->health < 0x100) {
-        m->health = 0xFF;
+        if (m != &gMarioStates[0]) {
+            // never kill remote marios
+            m->health = 0x100;
+        } else {
+            m->health = 0xFF;
+        }
     }
 
     reset_rumble_timers();
diff --git a/src/game/mario_actions_cutscene.c b/src/game/mario_actions_cutscene.c
index df3b4dcb..60f9ad97 100644
--- a/src/game/mario_actions_cutscene.c
+++ b/src/game/mario_actions_cutscene.c
@@ -773,7 +773,13 @@ s32 act_eaten_by_bubba(struct MarioState *m) {
     play_sound_if_no_flag(m, SOUND_MARIO_DYING, MARIO_ACTION_SOUND_PLAYED);
     set_mario_animation(m, MARIO_ANIM_A_POSE);
     m->marioObj->header.gfx.node.flags &= ~GRAPH_RENDER_ACTIVE;
-    m->health = 0xFF;
+    if (m != &gMarioStates[0]) {
+        // never kill remote marios
+        m->health = 0x100;
+    } else {
+        m->health = 0xFF;
+    }
+
     if (m->actionTimer++ == 60) {
         level_trigger_warp(m, WARP_OP_DEATH);
     }
@@ -1499,6 +1505,7 @@ s32 act_shocked(struct MarioState *m) {
 }
 
 s32 act_squished(struct MarioState *m) {
+
     UNUSED s32 pad;
     f32 squishAmount;
     f32 spaceUnderCeil;
@@ -1513,7 +1520,13 @@ s32 act_squished(struct MarioState *m) {
         case 0:
             if (spaceUnderCeil > 160.0f) {
                 m->squishTimer = 0;
-                return set_mario_action(m, ACT_IDLE, 0);
+                // prevent infinite loop for remote players
+                if (m == &gMarioStates[0]) {
+                    return set_mario_action(m, ACT_IDLE, 0);
+                } else {
+                    set_mario_action(m, ACT_IDLE, 0);
+                    return FALSE;
+                }
             }
 
             m->squishTimer = 0xFF;
@@ -1587,7 +1600,13 @@ s32 act_squished(struct MarioState *m) {
     // squished for more than 10 seconds, so kill Mario
     if (m->actionArg++ > 300) {
         // 0 units of health
-        m->health = 0x00FF;
+        if (m != &gMarioStates[0]) {
+            // never kill remote marios
+            m->health = 0x100;
+        } else {
+            m->health = 0xFF;
+        }
+
         m->hurtCounter = 0;
         level_trigger_warp(m, WARP_OP_DEATH);
         // woosh, he's gone!
@@ -2634,6 +2653,10 @@ static s32 act_end_waving_cutscene(struct MarioState *m) {
 }
 
 static s32 check_for_instant_quicksand(struct MarioState *m) {
+    if (m != &gMarioStates[0]) {
+        // never kill remote marios
+        return FALSE;
+    }
     if (m->floor->type == SURFACE_INSTANT_QUICKSAND && m->action & ACT_FLAG_INVULNERABLE
         && m->action != ACT_QUICKSAND_DEATH) {
         update_mario_sound_and_camera(m);
diff --git a/src/game/mario_actions_moving.c b/src/game/mario_actions_moving.c
index a6b7ed56..30aba6a3 100644
--- a/src/game/mario_actions_moving.c
+++ b/src/game/mario_actions_moving.c
@@ -470,7 +470,7 @@ void update_walking_speed(struct MarioState *m) {
     }
     else {
          m->faceAngle[1] = m->intendedYaw - approach_s32((s16)(m->intendedYaw - m->faceAngle[1]), 0, 0x800, 0x800);
-    }        
+    }
     apply_slope_accel(m);
 }
 
@@ -1252,7 +1252,7 @@ s32 act_riding_shell_ground(struct MarioState *m) {
     }
 
     adjust_sound_for_speed(m);
-    
+
     reset_rumble_timers();
     return FALSE;
 }
@@ -1353,7 +1353,11 @@ s32 act_burning_ground(struct MarioState *m) {
 
     m->health -= 10;
     if (m->health < 0x100) {
-        set_mario_action(m, ACT_STANDING_DEATH, 0);
+        extern struct MarioState gMarioStates[];
+        if (m == &gMarioStates[0]) {
+            // never kill remote marios
+            set_mario_action(m, ACT_STANDING_DEATH, 0);
+        }
     }
 
     m->marioBodyState->eyeState = MARIO_EYES_DEAD;
@@ -1855,7 +1859,7 @@ s32 act_long_jump_land(struct MarioState *m) {
         m->forwardVel = 0.0f;
     }
 #endif
-    
+
     if (!(m->input & INPUT_Z_DOWN)) {
         m->input &= ~INPUT_A_PRESSED;
     }
diff --git a/src/game/spawn_object.c b/src/game/spawn_object.c
index 843739dd..af1a3bc5 100644
--- a/src/game/spawn_object.c
+++ b/src/game/spawn_object.c
@@ -197,7 +197,9 @@ void unload_object(struct Object *obj) {
     obj->header.gfx.node.flags &= ~GRAPH_RENDER_CYLBOARD;
     obj->header.gfx.node.flags &= ~GRAPH_RENDER_ACTIVE;
 
-    if (obj->oSyncID != 0) { network_send_object(obj); }
+    if (obj->oSyncID != 0) {
+        network_send_object(obj);
+    }
 
     deallocate_object(&gFreeObjectList, &obj->header);
 }
diff --git a/src/pc/network/packets/packet_player.c b/src/pc/network/packets/packet_player.c
index 319ba265..456f89b7 100644
--- a/src/pc/network/packets/packet_player.c
+++ b/src/pc/network/packets/packet_player.c
@@ -14,6 +14,8 @@ void network_send_player(void) {
     packet_write(&p, &gMarioStates[0], 96);
     packet_write(&p, gMarioStates[0].controller, 20);
     packet_write(&p, gMarioStates[0].marioObj->rawData.asU32, 320);
+    packet_write(&p, &gMarioStates[0].health, 2);
+
     packet_write(&p, &heldSyncID, 4);
     network_send(&p);
 }
@@ -26,12 +28,15 @@ void network_receive_player(struct Packet* p) {
     packet_read(p, &gMarioStates[1], 96);
     packet_read(p, gMarioStates[1].controller, 20);
     packet_read(p, &gMarioStates[1].marioObj->rawData.asU32, 320);
+    packet_write(p, &gMarioStates[1].health, 2);
     packet_read(p, &heldSyncID, 4);
 
     if (heldSyncID != NULL) {
         assert(syncObjects[heldSyncID].o != NULL);
         gMarioStates[1].heldObj = syncObjects[heldSyncID].o;
         gMarioStates[1].heldObj->heldByPlayerIndex = 1;
+    } else {
+        gMarioStates[1].heldObj = NULL;
     }
 
     // restore action state, needed for jump kicking
@@ -40,4 +45,4 @@ void network_receive_player(struct Packet* p) {
 
 void network_update_player(void) {
     network_send_player();
-}
\ No newline at end of file
+}