diff --git a/core/assets/bundles/bundle.properties b/core/assets/bundles/bundle.properties
index 501c1bc062..ee5301ce6f 100644
--- a/core/assets/bundles/bundle.properties
+++ b/core/assets/bundles/bundle.properties
@@ -443,6 +443,8 @@ text.liquid.heatcapacity=[LIGHT_GRAY]Heat Capacity: {0}
 text.liquid.viscosity=[LIGHT_GRAY]Viscosity: {0}
 text.liquid.temperature=[LIGHT_GRAY]Temperature: {0}
 
+block.core.name=Core
+block.metalfloor.name=Metal Floor
 block.deepwater.name=deepwater
 block.water.name=water
 block.lava.name=lava
diff --git a/core/src/io/anuke/mindustry/content/Mechs.java b/core/src/io/anuke/mindustry/content/Mechs.java
index 86ffde48cd..3c9fdeefd1 100644
--- a/core/src/io/anuke/mindustry/content/Mechs.java
+++ b/core/src/io/anuke/mindustry/content/Mechs.java
@@ -37,14 +37,23 @@ public class Mechs implements ContentList{
     @Override
     public void load(){
 
-        alpha = new Mech("alpha-mech", false){{
-            drillPower = 1;
-            mineSpeed = 1.5f;
-            speed = 0.5f;
-            boostSpeed = 0.85f;
-            weapon = Weapons.blaster;
-            maxSpeed = 4f;
-        }};
+        alpha = new Mech("alpha-mech", false){
+            {
+                drillPower = 1;
+                mineSpeed = 1.5f;
+                speed = 0.5f;
+                boostSpeed = 0.85f;
+                weapon = Weapons.blaster;
+                maxSpeed = 4f;
+            }
+
+            @Override
+            public void updateAlt(Player player){
+                if(player.altHeat >= 0.91f){
+
+                }
+            }
+        };
 
         delta = new Mech("delta-mech", false){
             {
diff --git a/core/src/io/anuke/mindustry/entities/Player.java b/core/src/io/anuke/mindustry/entities/Player.java
index a40bb31d92..d7eb75db0a 100644
--- a/core/src/io/anuke/mindustry/entities/Player.java
+++ b/core/src/io/anuke/mindustry/entities/Player.java
@@ -476,6 +476,9 @@ public class Player extends Unit implements BuilderTrait, CarryTrait, ShooterTra
                 updateShooting(); //server simulates player shooting
             }
             return;
+        }else{
+            //unlock mech when used
+            control.database().unlockContent(mech);
         }
 
         if(mobile){
diff --git a/core/src/io/anuke/mindustry/type/Mech.java b/core/src/io/anuke/mindustry/type/Mech.java
index be903f2428..dd1329f3d1 100644
--- a/core/src/io/anuke/mindustry/type/Mech.java
+++ b/core/src/io/anuke/mindustry/type/Mech.java
@@ -10,6 +10,8 @@ import io.anuke.mindustry.ui.ContentDisplay;
 import io.anuke.ucore.graphics.Draw;
 import io.anuke.ucore.scene.ui.layout.Table;
 
+import static io.anuke.mindustry.Vars.mobile;
+
 //TODO merge unit type with mech
 public class Mech extends Upgrade implements UnlockableContent{
     public boolean flying;
@@ -55,6 +57,11 @@ public class Mech extends Upgrade implements UnlockableContent{
 
     public float getRotationAlpha(Player player){return 1f;}
 
+    @Override
+    public boolean isHidden() {
+        return !flying && mobile;
+    }
+
     @Override
     public void displayInfo(Table table){
         ContentDisplay.displayMech(table, this);