diff --git a/src/main/java/emu/nebula/game/activity/ActivityManager.java b/src/main/java/emu/nebula/game/activity/ActivityManager.java
index 3ba906b..72d6398 100644
--- a/src/main/java/emu/nebula/game/activity/ActivityManager.java
+++ b/src/main/java/emu/nebula/game/activity/ActivityManager.java
@@ -116,6 +116,7 @@ public class ActivityManager extends PlayerManager implements GameDatabaseObject
             case Levels -> new LevelsActivity(this, data);
             case Task -> new TaskActivity(this, data);
             case Shop -> new ShopActivity(this, data);
+            case TrekkerVersus -> new TrekkerVersusActivity(this, data);
             default -> null;
         };
         
diff --git a/src/main/java/emu/nebula/game/activity/ActivityModule.java b/src/main/java/emu/nebula/game/activity/ActivityModule.java
index 2952611..77e029f 100644
--- a/src/main/java/emu/nebula/game/activity/ActivityModule.java
+++ b/src/main/java/emu/nebula/game/activity/ActivityModule.java
@@ -34,6 +34,9 @@ public class ActivityModule extends GameContextModule {
         this.activities.add(2010101);
         this.activities.add(2010103);
         this.activities.add(2010104);
+        
+        // Trekker versus
+        this.activities.add(600001);
     }
     
 }
diff --git a/src/main/java/emu/nebula/game/activity/type/TrekkerVersusActivity.java b/src/main/java/emu/nebula/game/activity/type/TrekkerVersusActivity.java
new file mode 100644
index 0000000..a4a6039
--- /dev/null
+++ b/src/main/java/emu/nebula/game/activity/type/TrekkerVersusActivity.java
@@ -0,0 +1,95 @@
+package emu.nebula.game.activity.type;
+
+import dev.morphia.annotations.Entity;
+import emu.nebula.data.resources.ActivityDef;
+import emu.nebula.game.activity.ActivityManager;
+import emu.nebula.game.activity.GameActivity;
+import emu.nebula.game.tower.StarTowerBuild;
+import emu.nebula.proto.ActivityDetail.ActivityMsg;
+import emu.nebula.proto.Public.TrekkerVersusShow;
+import lombok.Getter;
+import us.hebi.quickbuf.RepeatedInt;
+
+@Getter
+@Entity
+public class TrekkerVersusActivity extends GameActivity {
+    private int[] charIds;
+    private int[] affixIds;
+    private int buildScore;
+    private int time;
+    
+    // Apply
+    private transient StarTowerBuild build;
+    private transient int[] affixList;
+    
+    @Deprecated // Morphia only
+    public TrekkerVersusActivity() {
+        
+    }
+    
+    public TrekkerVersusActivity(ActivityManager manager, ActivityDef data) {
+        super(manager, data);
+    }
+    
+    public boolean apply(long buildId, RepeatedInt affixes) {
+        // Get build
+        var build = this.getPlayer().getStarTowerManager().getBuildById(buildId);
+        
+        if (build == null) {
+            return false;
+        }
+        
+        // Set
+        this.build = build;
+        this.affixList = affixes.toArray();
+        
+        // Success
+        return true;
+    }
+    
+    public void settle(boolean passed, int time) {
+        // Sanity check
+        if (this.build == null || this.affixList == null) {
+            return;
+        }
+        
+        // Check if victory
+        if (passed) {
+            // Save characters/affixes
+            this.charIds = this.build.getCharIds().clone();
+            this.affixIds = this.affixList;
+            this.time = time;
+            this.buildScore = this.build.getScore();
+            
+            // Save to database
+            this.save();
+        }
+        
+        // Clear
+        this.build = null;
+        this.affixList = null;
+    }
+    
+    // Proto
+
+    @Override
+    public void encodeActivityMsg(ActivityMsg msg) {
+        msg.getMutableTrekkerVersus()
+                .setShow(this.getShowProto());
+    }
+
+    public TrekkerVersusShow getShowProto() {
+        var show = TrekkerVersusShow.newInstance();
+        
+        if (this.getCharIds() != null) {
+            show.addAllCharIds(this.getCharIds());
+            show.setBuildScore(this.getBuildScore());
+        }
+        
+        if (this.getAffixIds() != null) {
+            show.addAllAffixIds(this.getAffixIds());
+        }
+        
+        return show;
+    }
+}
diff --git a/src/main/java/emu/nebula/server/handlers/HandlerActivityTrekkerVersusApplyReq.java b/src/main/java/emu/nebula/server/handlers/HandlerActivityTrekkerVersusApplyReq.java
new file mode 100644
index 0000000..fb8b60f
--- /dev/null
+++ b/src/main/java/emu/nebula/server/handlers/HandlerActivityTrekkerVersusApplyReq.java
@@ -0,0 +1,36 @@
+package emu.nebula.server.handlers;
+
+import emu.nebula.net.NetHandler;
+import emu.nebula.net.NetMsgId;
+import emu.nebula.proto.ActivityTrekkerVersusApply.ActivityTrekkerVersusApplyReq;
+import emu.nebula.net.HandlerId;
+import emu.nebula.game.activity.type.TrekkerVersusActivity;
+import emu.nebula.net.GameSession;
+
+@HandlerId(NetMsgId.activity_trekker_versus_apply_req)
+public class HandlerActivityTrekkerVersusApplyReq extends NetHandler {
+
+    @Override
+    public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Parse request
+        var req = ActivityTrekkerVersusApplyReq.parseFrom(message);
+        
+        // Get activity
+        var activity = session.getPlayer().getActivityManager().getActivity(TrekkerVersusActivity.class, req.getActivityId());
+        
+        if (activity == null) {
+            return session.encodeMsg(NetMsgId.activity_trekker_versus_apply_failed_ack);
+        }
+        
+        // Apply
+        boolean result = activity.apply(req.getBuildId(), req.getAffixIds());
+        
+        if (result == false) {
+            return session.encodeMsg(NetMsgId.activity_trekker_versus_apply_failed_ack);
+        }
+        
+        // Encode and send
+        return session.encodeMsg(NetMsgId.activity_trekker_versus_apply_succeed_ack);
+    }
+
+}
diff --git a/src/main/java/emu/nebula/server/handlers/HandlerActivityTrekkerVersusSettleReq.java b/src/main/java/emu/nebula/server/handlers/HandlerActivityTrekkerVersusSettleReq.java
new file mode 100644
index 0000000..88b888f
--- /dev/null
+++ b/src/main/java/emu/nebula/server/handlers/HandlerActivityTrekkerVersusSettleReq.java
@@ -0,0 +1,40 @@
+package emu.nebula.server.handlers;
+
+import emu.nebula.net.NetHandler;
+import emu.nebula.net.NetMsgId;
+import emu.nebula.proto.ActivityTrekkerVersusSettle.ActivityTrekkerVersusSettleReq;
+import emu.nebula.proto.ActivityTrekkerVersusSettle.ActivityTrekkerVersusSettleResp;
+import emu.nebula.net.HandlerId;
+import emu.nebula.game.activity.type.TrekkerVersusActivity;
+import emu.nebula.net.GameSession;
+
+@HandlerId(NetMsgId.activity_trekker_versus_settle_req)
+public class HandlerActivityTrekkerVersusSettleReq extends NetHandler {
+
+    @Override
+    public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Parse request
+        var req = ActivityTrekkerVersusSettleReq.parseFrom(message);
+        
+        // Get activity
+        var activity = session.getPlayer().getActivityManager().getActivity(TrekkerVersusActivity.class, req.getActivityId());
+        
+        if (activity == null) {
+            return session.encodeMsg(NetMsgId.activity_trekker_versus_settle_failed_ack);
+        }
+        
+        // Settle
+        activity.settle(req.getPassed(), req.getTime());
+        
+        // Handle client events for achievements
+        session.getPlayer().getAchievementManager().handleClientEvents(req.getEvents());
+        
+        // Build response
+        var rsp = ActivityTrekkerVersusSettleResp.newInstance()
+                .setShow(activity.getShowProto());
+        
+        // Encode and send
+        return session.encodeMsg(NetMsgId.activity_trekker_versus_settle_succeed_ack, rsp);
+    }
+
+}