diff --git a/build.gradle b/build.gradle
index f93082e0fa..afaa994b8b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -35,7 +35,7 @@ allprojects{
 
     ext{
         versionNumber = '7'
-        if(!project.hasProperty("versionModifier")) versionModifier = 'dev'
+        if(!project.hasProperty("versionModifier")) versionModifier = 'pre-alpha'
         if(!project.hasProperty("versionType")) versionType = 'official'
         appName = 'Mindustry'
         steamworksVersion = '0b86023401880bb5e586bc404bedbaae9b1f1c94'
diff --git a/core/src/mindustry/content/Blocks.java b/core/src/mindustry/content/Blocks.java
index 2e30852194..7386f73454 100644
--- a/core/src/mindustry/content/Blocks.java
+++ b/core/src/mindustry/content/Blocks.java
@@ -1018,17 +1018,17 @@ public class Blocks implements ContentList{
         //special transport blocks
 
         duct = new Duct("duct"){{
-            requirements(Category.distribution, with(Items.graphite, 5, Items.metaglass, 2));
+            requirements(Category.distribution, BuildVisibility.debugOnly, with(Items.graphite, 5, Items.metaglass, 2));
             speed = 4f;
         }};
 
         ductRouter = new DuctRouter("duct-router"){{
-            requirements(Category.distribution, with(Items.graphite, 10, Items.metaglass, 4));
+            requirements(Category.distribution, BuildVisibility.debugOnly, with(Items.graphite, 10, Items.metaglass, 4));
             speed = 4f;
         }};
 
         ductBridge = new DuctBridge("duct-bridge"){{
-            requirements(Category.distribution, with(Items.graphite, 20, Items.metaglass, 8));
+            requirements(Category.distribution, BuildVisibility.debugOnly, with(Items.graphite, 20, Items.metaglass, 8));
             speed = 4f;
         }};
 
diff --git a/core/src/mindustry/world/blocks/campaign/Accelerator.java b/core/src/mindustry/world/blocks/campaign/Accelerator.java
index 6ca4ee3f0a..7aeb501bef 100644
--- a/core/src/mindustry/world/blocks/campaign/Accelerator.java
+++ b/core/src/mindustry/world/blocks/campaign/Accelerator.java
@@ -109,10 +109,15 @@ public class Accelerator extends Block{
 
             if(!state.isCampaign() || !consValid()) return;
 
-            ui.planet.showPlanetLaunch(state.rules.sector, sector -> {
-                //TODO cutscene, etc...
-                consume();
-            });
+            //TODO implement
+            if(true){
+                ui.showInfo("@indev.campaign");
+            }else{
+                ui.planet.showPlanetLaunch(state.rules.sector, sector -> {
+                    //TODO cutscene, etc...
+                    consume();
+                });
+            }
             Events.fire(Trigger.acceleratorUse);
         }