diff --git a/gamestate.c b/gamestate.c
index 3abbba0..92f7932 100644
--- a/gamestate.c
+++ b/gamestate.c
@@ -473,9 +473,9 @@ static cpBool on_damage(cpArbiter* arb, cpSpace* space, cpDataPointer userData)
 	float damage = V2length(cp_to_v2(cpArbiterTotalImpulse(arb))) * COLLISION_DAMAGE_SCALING;
 
 	if (entity_a->is_box && entity_a->box_type == BoxExplosive)
-		entity_a->damage += 2.0f*EXPLOSION_DAMAGE_THRESHOLD;
+		entity_a->damage += 2.0f * EXPLOSION_DAMAGE_THRESHOLD;
 	if (entity_b->is_box && entity_b->box_type == BoxExplosive)
-		entity_b->damage += 2.0f*EXPLOSION_DAMAGE_THRESHOLD;
+		entity_b->damage += 2.0f * EXPLOSION_DAMAGE_THRESHOLD;
 
 	if (damage > 0.05f)
 	{
@@ -809,6 +809,7 @@ void ser_entity(SerState* ser, GameState* gs, Entity* e)
 		ser_entityid(ser, &e->next_box);
 		ser_entityid(ser, &e->prev_box);
 		SER_VAR(&e->compass_rotation);
+		SER_VAR(&e->indestructible);
 		SER_VAR(&e->thrust);
 		SER_VAR(&e->wanted_thrust);
 		SER_VAR(&e->energy_used);
@@ -1054,6 +1055,45 @@ void entity_ensure_in_orbit(Entity* e)
 	cpBodySetVelocity(e->body, cpvmult(cpvperp(pos), v));
 }
 
+EntityID create_spacestation(GameState* gs)
+{
+#define BOX_AT_TYPE(grid, pos, type) { Entity* box = new_entity(gs); box_create(gs, box, grid, pos); box->box_type = type; box->indestructible = indestructible; }
+#define BOX_AT(grid, pos) BOX_AT_TYPE(grid, pos, BoxHullpiece)
+
+	bool indestructible = false;
+	Entity* grid = new_entity(gs);
+	grid_create(gs, grid);
+	entity_set_pos(grid, (V2) { -150.0f, 0.0f });
+	entity_ensure_in_orbit(grid);
+	Entity* explosion_box = new_entity(gs);
+	box_create(gs, explosion_box, grid, (V2) { 0 });
+	explosion_box->is_explosion_unlock = true;
+	BOX_AT_TYPE(grid, ((V2) { BOX_SIZE, 0 }), BoxExplosive);
+	BOX_AT_TYPE(grid, ((V2) { BOX_SIZE*2, 0 }), BoxHullpiece);
+	BOX_AT_TYPE(grid, ((V2) { BOX_SIZE*3, 0 }), BoxHullpiece);
+	BOX_AT_TYPE(grid, ((V2) { BOX_SIZE*4, 0 }), BoxHullpiece);
+
+	indestructible = true;
+	for (float y = -BOX_SIZE * 5.0; y <= BOX_SIZE * 5.0; y += BOX_SIZE)
+	{
+		BOX_AT_TYPE(grid, ((V2) { BOX_SIZE*5.0, y }), BoxHullpiece);
+	}
+	for (float x = -BOX_SIZE * 5.0; x <= BOX_SIZE * 5.0; x += BOX_SIZE)
+	{
+		BOX_AT_TYPE(grid, ((V2) { x, BOX_SIZE*5.0 }), BoxHullpiece);
+		BOX_AT_TYPE(grid, ((V2) { x, -BOX_SIZE*5.0 }), BoxHullpiece);
+	}
+	indestructible = false;
+	BOX_AT_TYPE(grid, ((V2) { -BOX_SIZE*6.0, BOX_SIZE*5.0 }), BoxExplosive);
+	BOX_AT_TYPE(grid, ((V2) { -BOX_SIZE*6.0, BOX_SIZE*3.0 }), BoxExplosive);
+	BOX_AT_TYPE(grid, ((V2) { -BOX_SIZE*6.0, BOX_SIZE*1.0 }), BoxExplosive);
+	BOX_AT_TYPE(grid, ((V2) { -BOX_SIZE*6.0, -BOX_SIZE*2.0 }), BoxExplosive);
+	BOX_AT_TYPE(grid, ((V2) { -BOX_SIZE*6.0, -BOX_SIZE*3.0 }), BoxExplosive);
+	BOX_AT_TYPE(grid, ((V2) { -BOX_SIZE*6.0, -BOX_SIZE*5.0 }), BoxExplosive);
+
+	return get_id(gs, grid);
+}
+
 void process(GameState* gs, float dt)
 {
 	assert(gs->space != NULL);
@@ -1178,9 +1218,12 @@ void process(GameState* gs, float dt)
 			if (nearest != NULL)
 			{
 				Entity* cur_box = cp_shape_entity(nearest);
-				Entity* cur_grid = cp_body_entity(cpShapeGetBody(nearest));
-				p->damage -= DAMAGE_TO_PLAYER_PER_BLOCK * ((BATTERY_CAPACITY - cur_box->energy_used) / BATTERY_CAPACITY);
-				grid_remove_box(gs, cur_grid, cur_box);
+				if (!cur_box->indestructible)
+				{
+					Entity* cur_grid = cp_body_entity(cpShapeGetBody(nearest));
+					p->damage -= DAMAGE_TO_PLAYER_PER_BLOCK * ((BATTERY_CAPACITY - cur_box->energy_used) / BATTERY_CAPACITY);
+					grid_remove_box(gs, cur_grid, cur_box);
+				}
 			}
 			else if (target_grid == NULL)
 			{
@@ -1215,6 +1258,11 @@ void process(GameState* gs, float dt)
 		p->damage = clamp01(p->damage);
 	}
 
+	if(get_entity(gs, gs->cur_spacestation) == NULL)
+	{
+		gs->cur_spacestation = create_spacestation(gs);
+	}
+
 	// process entities
 	for (size_t i = 0; i < gs->cur_next_entity; i++) {
 		Entity* e = &gs->entities[i];
diff --git a/main.c b/main.c
index 90684ba..936f569 100644
--- a/main.c
+++ b/main.c
@@ -791,6 +791,10 @@ frame(void)
 											img = image_medbay_used;
 									}
 									sgp_set_image(0, img);
+									if (b->indestructible)
+									{
+										sgp_set_color(0.2f, 0.2f, 0.2f, 1.0f);
+									}
 									draw_texture_centered(entity_pos(b), BOX_SIZE);
 									sgp_reset_image(0);
 
diff --git a/server.c b/server.c
index 4b8317e..af7d8ae 100644
--- a/server.c
+++ b/server.c
@@ -21,18 +21,8 @@ void server(void* data)
 	initialize(&gs, entity_data, entities_size);
 	Log("Allocated %zu bytes for entities\n", entities_size);
 
-#define BOX_AT(grid, pos) { Entity* box = new_entity(&gs); box_create(&gs, box, grid, pos); }
-	// space station with explosion unlock
-	if (true)
-	{
-		Entity* grid = new_entity(&gs);
-		grid_create(&gs, grid);
-		entity_set_pos(grid, (V2) { -10.0f, 0.0f });
-		entity_ensure_in_orbit(grid);
-		Entity* explosion_box = new_entity(&gs);
-		box_create(&gs, explosion_box, grid, (V2) { 0 });
-		explosion_box->is_explosion_unlock = true;
-	}
+#define BOX_AT_TYPE(grid, pos, type) { Entity* box = new_entity(&gs); box_create(&gs, box, grid, pos); box->box_type = type; }
+#define BOX_AT(grid, pos) BOX_AT_TYPE(grid, pos, BoxHullpiece)
 
 	// one box policy
 	if (false)
diff --git a/types.h b/types.h
index 8bbdee7..9401952 100644
--- a/types.h
+++ b/types.h
@@ -6,6 +6,7 @@
 #define PLAYER_SIZE ((V2){.x = BOX_SIZE, .y = BOX_SIZE})
 #define PLAYER_MASS 0.5f
 #define PLAYER_JETPACK_FORCE 2.0f
+// #define PLAYER_JETPACK_FORCE 20.0f
 #define PLAYER_JETPACK_SPICE_PER_SECOND 0.3f
 #define MAX_HAND_REACH 1.0f
 #define GOLD_COLLECT_RADIUS 0.3f
@@ -174,6 +175,7 @@ typedef struct Entity
 	EntityID next_box;
 	EntityID prev_box; // doubly linked so can remove in middle of chain
 	enum CompassRotation compass_rotation;
+	bool indestructible;
 	float wanted_thrust; // the thrust command applied to the thruster
 	float thrust;      // the actual thrust it can provide based on energy sources in the grid
 	float energy_used; // battery
@@ -199,6 +201,8 @@ typedef struct GameState
 
 	Player players[MAX_PLAYERS];
 
+	EntityID cur_spacestation;
+
 	// Entity arena
 	// ent:ity pointers can't move around because of how the physics engine handles user data.
 	// if you really need this, potentially refactor to store entity IDs instead of pointers
@@ -252,6 +256,7 @@ struct ClientToServer
 void server(void* data); // data parameter required from thread api...
 
 // gamestate
+EntityID create_spacestation(GameState* gs);
 void initialize(struct GameState* gs, void* entity_arena, size_t entity_arena_size);
 void destroy(struct GameState* gs);
 void process(struct GameState* gs, float dt); // does in place