diff --git a/src/main/java/cloudburst/rejects/MeteorRejectsAddon.java b/src/main/java/cloudburst/rejects/MeteorRejectsAddon.java
index 839a666..529c085 100644
--- a/src/main/java/cloudburst/rejects/MeteorRejectsAddon.java
+++ b/src/main/java/cloudburst/rejects/MeteorRejectsAddon.java
@@ -40,6 +40,7 @@ public class MeteorRejectsAddon extends MeteorAddon {
 		modules.add(new Rendering());
 		modules.add(new SkeletonESP());
 		modules.add(new SoundLocator());
+		modules.add(new SpawnProofer());
 
 		Commands commands = Commands.get();
 		commands.add(new AntiAntiXrayCommand());
diff --git a/src/main/java/cloudburst/rejects/modules/SpawnProofer.java b/src/main/java/cloudburst/rejects/modules/SpawnProofer.java
new file mode 100644
index 0000000..ce9aeab
--- /dev/null
+++ b/src/main/java/cloudburst/rejects/modules/SpawnProofer.java
@@ -0,0 +1,132 @@
+package cloudburst.rejects.modules;
+
+import meteordevelopment.orbit.EventHandler;
+import minegame159.meteorclient.events.render.RenderEvent;
+import minegame159.meteorclient.events.world.TickEvent;
+import minegame159.meteorclient.rendering.MeshBuilder;
+import minegame159.meteorclient.rendering.Renderer;
+import minegame159.meteorclient.rendering.ShapeMode;
+import minegame159.meteorclient.settings.*;
+import minegame159.meteorclient.systems.modules.Module;
+import minegame159.meteorclient.utils.player.InvUtils;
+import minegame159.meteorclient.utils.render.color.SettingColor;
+import minegame159.meteorclient.utils.world.BlockIterator;
+import minegame159.meteorclient.utils.world.BlockUtils;
+import net.minecraft.block.*;
+import net.minecraft.block.enums.BlockHalf;
+import net.minecraft.block.enums.SlabType;
+import net.minecraft.util.Hand;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.shape.VoxelShapes;
+import net.minecraft.world.LightType;
+
+import cloudburst.rejects.MeteorRejectsAddon;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class SpawnProofer extends Module {
+	private final SettingGroup sgGeneral = settings.getDefaultGroup();
+
+	private final Setting<Integer> range = sgGeneral.add(new IntSetting.Builder()
+			.name("range")
+			.description("Range for block placement and rendering")
+			.min(1)
+			.max(4)
+			.sliderMin(1)
+			.sliderMax(1)
+			.defaultValue(3)
+			.build()
+	);
+
+	private final Setting<List<Block>> blocks = sgGeneral.add(new BlockListSetting.Builder()
+			.name("blocks")
+			.description("Blocks to use for spawn proofing")
+			.defaultValue(Collections.emptyList())
+			.build()
+	);
+
+	private final Setting<ShapeMode> shapeMode = sgGeneral.add(new EnumSetting.Builder<ShapeMode>()
+			.name("shape-mode")
+			.description("Shape mode")
+			.defaultValue(ShapeMode.Both)
+			.build()
+	);
+
+	private final Setting<SettingColor> sideColor = sgGeneral.add(new ColorSetting.Builder()
+			.name("side-color")
+			.description("Edge color")
+			.defaultValue(new SettingColor(255, 0, 0, 75))
+			.build()
+	);
+
+	private final Setting<SettingColor> lineColor = sgGeneral.add(new ColorSetting.Builder()
+			.name("line-color")
+			.description("Line color")
+			.defaultValue(new SettingColor(255, 0, 0, 255))
+			.build()
+	);
+
+	private final Setting<Boolean> rotate = sgGeneral.add(new BoolSetting.Builder()
+			.name("rotate")
+			.description("Rotates towards the blocks being placed.")
+			.defaultValue(true)
+			.build()
+	);
+
+	private final BlockPos.Mutable bp = new BlockPos.Mutable();
+	private final ArrayList<BlockPos> positions = new ArrayList<>();
+	private final MeshBuilder mb = new MeshBuilder();
+
+	public SpawnProofer() {
+		super(MeteorRejectsAddon.CATEGORY, "spawn-proofer", "Spawn proofs things using slabs.");
+	}
+
+	@EventHandler
+	private void onTick(TickEvent.Post event) {
+		// Clear and set positions
+		positions.clear();
+		BlockIterator.register(range.get(), range.get(), (blockPos, blockState) -> {
+			if (validSpawn(new BlockPos(blockPos.getX(), blockPos.getY()-1, blockPos.getZ()), blockState)) positions.add(blockPos);
+		});
+
+		for (BlockPos blockPos : positions) {
+			// Set slot
+			int slot = findSlot();
+			// Place blocks
+			BlockUtils.place(blockPos, Hand.MAIN_HAND, slot, rotate.get(), -50, false, true, true, true);
+		}
+	}
+
+	@EventHandler
+	private void onRender(RenderEvent event) {
+		// Render all positions
+		for (BlockPos blockPos : positions) {
+			Renderer.boxWithLines(Renderer.NORMAL, Renderer.LINES, blockPos, sideColor.get(), lineColor.get(), shapeMode.get(), 0);
+		}
+	}
+
+	private int findSlot() {
+		return InvUtils.findItemInHotbar(itemStack -> blocks.get().contains(Block.getBlockFromItem(itemStack.getItem())));
+	}
+
+	private boolean validSpawn(BlockPos blockPos, BlockState blockState) {
+		if (blockPos.getY() == 0) return false;
+		if (!(blockState.getBlock() instanceof AirBlock)) return false;
+
+		bp.set(blockPos).move(0, -1, 0);
+		if (!topSurface(mc.world.getBlockState(bp))) {
+			if (mc.world.getBlockState(bp).getCollisionShape(mc.world, bp) != VoxelShapes.fullCube()) return false;
+			if (mc.world.getBlockState(bp).isTranslucent(mc.world, bp)) return false;
+		}
+
+		if (mc.world.getLightLevel(blockPos, 0) <= 7) return false;
+		else return mc.world.getLightLevel(LightType.BLOCK, blockPos) <= 7;
+	}
+
+	private boolean topSurface(BlockState blockState) {
+		if (blockState.getBlock() instanceof SlabBlock && blockState.get(SlabBlock.TYPE) == SlabType.TOP) return true;
+		else return blockState.getBlock() instanceof StairsBlock && blockState.get(StairsBlock.HALF) == BlockHalf.TOP;
+	}
+}
\ No newline at end of file