diff --git a/content/artifacts/artifactory/plugin.js b/content/artifacts/artifactory/plugin.js
index 009756de..5bae1d39 100644
--- a/content/artifacts/artifactory/plugin.js
+++ b/content/artifacts/artifactory/plugin.js
@@ -246,7 +246,7 @@ function Unfound({ selected }) {
   let [lastLocationId, setLastLocationId] = useState(null);
 
   let planets = myPlanetsWithFindable()
-    .filter(planet => !planet.hasTriedFindingArtifact);
+  .filter(planet => !planet.hasTriedFindingArtifact && (planet.prospectedBlockNumber === undefined || !prospectExpired(currentBlockNumber, planet.prospectedBlockNumber)))
 
   let planetsChildren = planets.map(planet => {
     let planetEntry = {
diff --git a/content/artifacts/hunt-artifacts/plugin.js b/content/artifacts/hunt-artifacts/plugin.js
index 9ea5d8e3..61cae2ef 100644
--- a/content/artifacts/hunt-artifacts/plugin.js
+++ b/content/artifacts/hunt-artifacts/plugin.js
@@ -1,8 +1,11 @@
 // Hunt Artifacts
 
+const planetLevels = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
+
 class Plugin {
   constructor() {
     this.maxEnergyPercent = 50;
+    this.minPlanetLevel = 2;
   }
   render(container) {
     container.style.width = '200px';
@@ -33,6 +36,31 @@ class Plugin {
       }
     }
 
+    let levelLabel = document.createElement('label');
+    levelLabel.innerText = 'Min. level to capture';
+    levelLabel.style.display = 'block';
+
+    let level = document.createElement('select');
+    level.style.background = 'rgb(8,8,8)';
+    level.style.width = '100%';
+    level.style.marginTop = '10px';
+    level.style.marginBottom = '10px';
+    planetLevels.forEach(lvl => {
+      let opt = document.createElement('option');
+      opt.value = `${lvl}`;
+      opt.innerText = `Level ${lvl}`;
+      level.appendChild(opt);
+    });
+    level.value = `${this.minPlanetLevel}`;
+
+    level.onchange = (evt) => {
+      try {
+        this.minPlanetLevel = parseInt(evt.target.value, 10);
+      } catch (e) {
+        console.error('could not parse planet level', e);
+      }
+    }
+
     let message = document.createElement('div');
 
     let button = document.createElement('button');
@@ -47,6 +75,7 @@ class Plugin {
         let moves = captureArtifacts(
           planet.locationId,
           this.maxEnergyPercent,
+          this.minPlanetLevel
         );
         message.innerText = `Capturing ${moves} planets.`;
       } else {
@@ -66,7 +95,7 @@ class Plugin {
         // TODO: Make asteroid check configurable
         if (!isAsteroid(planet)) {
           setTimeout(() => {
-            moves += captureArtifacts(planet.locationId, this.maxEnergyPercent);
+            moves += captureArtifacts(planet.locationId, this.maxEnergyPercent, this.minPlanetLevel);
             message.innerText = `Capturing ${moves} planets.`;
           }, 0);
         }
@@ -76,6 +105,8 @@ class Plugin {
     container.appendChild(stepperLabel);
     container.appendChild(stepper);
     container.appendChild(percent);
+    container.appendChild(levelLabel);
+    container.appendChild(level);
     container.appendChild(button);
     container.appendChild(globalButton);
     container.appendChild(message);
@@ -88,7 +119,7 @@ function isAsteroid(planet) {
   return planet.planetResource === 1;
 }
 
-function captureArtifacts(fromId, maxDistributeEnergyPercent) {
+function captureArtifacts(fromId, maxDistributeEnergyPercent, minCaptureLevel) {
   const to = df.getPlanetWithId(fromId);
   const from = df.getPlanetWithId(fromId);
 
@@ -99,7 +130,7 @@ function captureArtifacts(fromId, maxDistributeEnergyPercent) {
   }
 
   const candidates_ = df.getPlanetsInRange(fromId, maxDistributeEnergyPercent)
-    .filter(p => df.isPlanetMineable(p) && p.owner === "0x0000000000000000000000000000000000000000")
+    .filter(p => df.isPlanetMineable(p) && p.owner === "0x0000000000000000000000000000000000000000" && p.planetLevel >= minCaptureLevel)
     .map(to => {
       return [to, distance(from, to)]
     })