diff --git a/js/events.js b/js/events.js
index 9c6a0043..8eb2e169 100644
--- a/js/events.js
+++ b/js/events.js
@@ -1,4 +1,4 @@
-import { canvas } from "./main.js";
+import { canvas, ctx } from "./main.js";
 import { drawAll, drawVisible } from "./draw.js";
 
 const mouseDown = function (event, visibleObjects, dragTools) {
@@ -44,14 +44,38 @@ const mouseOut = function (event, dragTools) {
 };
 
 const mouseMove = function (event, visibleObjects, dragTools) {
-  if (!dragTools.isDragging) {
-    return;
-  }
-
   const boundigClientRect = canvas.getBoundingClientRect();
   const mouseX = parseInt(event.clientX - boundigClientRect.x);
   const mouseY = parseInt(event.clientY - boundigClientRect.y);
 
+  const allObjects = Object.values(visibleObjects.datatypes)
+    .map((datatype) => datatype.collection)
+    .flat();
+
+  let someHovered = false;
+  for (const object of allObjects) {
+    if (object.isHere(mouseX, mouseY)) {
+      if (dragTools.hoveredObject !== object) {
+        dragTools.hoveredObject = object;
+        drawVisible(visibleObjects);
+        object.showObjectTip(ctx);
+      }
+      someHovered = true;
+      document.body.style.cursor = "pointer";
+      break;
+    }
+  }
+
+  if (!someHovered) {
+    document.body.style.cursor = "default";
+    dragTools.hoveredObject = null;
+    drawVisible(visibleObjects);
+  }
+
+  if (!dragTools.isDragging) {
+    return;
+  }
+
   const dx = mouseX - dragTools.prevMouseX;
   const dy = mouseY - dragTools.prevMouseY;
 
diff --git a/js/lib/getName.js b/js/lib/getName.js
index edfbc1f5..599fb792 100644
--- a/js/lib/getName.js
+++ b/js/lib/getName.js
@@ -1,4 +1,4 @@
-import { mappings } from "../../data/particles.js";
+import { mappings } from "../../mappings/particles.js";
 
 export function getName(pdg) {
   const particle = mappings[pdg];
diff --git a/js/lib/graphic-primitives.js b/js/lib/graphic-primitives.js
index f8426ad5..a09cf63f 100644
--- a/js/lib/graphic-primitives.js
+++ b/js/lib/graphic-primitives.js
@@ -131,3 +131,18 @@ export function drawObjectHeader(ctx, object) {
   }
   ctx.restore();
 }
+
+export function drawObjectInfoTip(ctx, x, y, ...args) {
+  ctx.save();
+  ctx.font = "bold 12px sans-serif";
+  const lines = args.length;
+  const height = 20 * lines;
+  const maxWidth = Math.max(...args.map((arg) => ctx.measureText(arg).width));
+  ctx.fillStyle = "rgba(225, 225, 225, 1)";
+  ctx.fillRect(x, y, maxWidth + 10, height + 10);
+  ctx.fillStyle = "black";
+  for (const [i, arg] of args.entries()) {
+    ctx.fillText(arg, x + 5, y + 20 + i * 20);
+  }
+  ctx.restore();
+}
diff --git a/js/menu/filter/filter.js b/js/menu/filter/filter.js
index 60724f6a..abcc5807 100644
--- a/js/menu/filter/filter.js
+++ b/js/menu/filter/filter.js
@@ -5,6 +5,7 @@ import { reconnect } from "./reconnect.js";
 import { getVisible } from "../../events.js";
 import { units } from "../../types/units.js";
 import { copyObject } from "../../lib/copy.js";
+import { SimStatusBitFieldDisplayValues } from "../../../mappings/sim-status.js";
 
 const filterButton = document.getElementById("filter-button");
 const openFilter = document.getElementById("open-filter");
@@ -60,17 +61,6 @@ let parametersRange = units.sort((a, b) =>
 
 parametersRange = parametersRange.map((parameter) => new Range(parameter));
 
-const SimStatusBitFieldDisplayValues = {
-  23: "Overlay",
-  24: "Stopped",
-  25: "LeftDetector",
-  26: "DecayedInCalorimeter",
-  27: "DecayedInTracker",
-  28: "VertexIsNotEndpointOfParent",
-  29: "Backscatter",
-  30: "CreatedInSimulation",
-};
-
 const bits = new BitFieldBuilder(
   "simulatorStatus",
   "Simulation status",
diff --git a/js/types/load.js b/js/types/load.js
index b9ee63d7..201602e4 100644
--- a/js/types/load.js
+++ b/js/types/load.js
@@ -21,13 +21,19 @@ function loadEmptyRelations(object, relations) {
   }
 }
 
-export function loadPlainObject(collection, datatype, collectionId) {
+export function loadPlainObject(
+  collection,
+  datatype,
+  collectionId,
+  collectionName
+) {
   const objects = [];
 
   for (const [index, particle] of collection.entries()) {
     const newObject = new objectTypes[datatype]();
     newObject.index = index;
     newObject.collectionId = collectionId;
+    newObject.collectionName = collectionName;
 
     loadMembers(newObject, particle, datatypes[datatype].members);
     loadEmptyRelations(newObject, datatypes[datatype]);
@@ -66,7 +72,7 @@ export function loadObjects(jsonData, event, objectsToLoad) {
   });
 
   for (const datatype of datatypesToLoad) {
-    Object.values(eventData).forEach((element) => {
+    Object.entries(eventData).forEach(([key, element]) => {
       const collectionName = `${datatype}Collection`;
       if (element.collType === collectionName) {
         const collection = element.collection;
@@ -74,7 +80,8 @@ export function loadObjects(jsonData, event, objectsToLoad) {
         const objectCollection = loadPlainObject(
           collection,
           datatype,
-          collectionId
+          collectionId,
+          key
         );
         objects.datatypes[datatype].collection.push(...objectCollection);
       }
diff --git a/js/types/objects.js b/js/types/objects.js
index e52006d9..5e47ed73 100644
--- a/js/types/objects.js
+++ b/js/types/objects.js
@@ -3,10 +3,12 @@ import {
   drawRoundedRect,
   drawTextLines,
   drawObjectHeader,
+  drawObjectInfoTip,
 } from "../lib/graphic-primitives.js";
 import { getName } from "../lib/getName.js";
 import { linkTypes } from "./links.js";
 import { parseCharge } from "../lib/parseCharge.js";
+import { getSimStatusDisplayValuesFromBit } from "../../mappings/sim-status.js";
 
 const TOP_MARGIN = 45;
 
@@ -53,6 +55,13 @@ class EDMObject {
       y < this.y + this.height
     );
   }
+
+  showObjectTip(ctx) {
+    const x = this.x;
+    const y = this.y - 10;
+    const collectionName = "Collection: " + this.collectionName;
+    drawObjectInfoTip(ctx, x, y, collectionName);
+  }
 }
 
 export class MCParticle extends EDMObject {
@@ -106,7 +115,17 @@ export class MCParticle extends EDMObject {
     const topLines = [];
     topLines.push("ID: " + this.index);
     topLines.push("Gen. stat.: " + this.generatorStatus);
-    topLines.push("Sim. stat.: " + this.simulatorStatus);
+    const simulatorStatus = getSimStatusDisplayValuesFromBit(
+      this.simulatorStatus
+    );
+    const simulatorStatusFirstLetter = simulatorStatus
+      .map((s) => s[0])
+      .join("");
+    const simulatorStatusString =
+      simulatorStatusFirstLetter !== ""
+        ? simulatorStatusFirstLetter
+        : this.simulatorStatus;
+    topLines.push("Sim. stat.: " + simulatorStatusString);
 
     const bottomY = this.y + this.height * 0.65;
     const bottomLines = [];
@@ -121,6 +140,17 @@ export class MCParticle extends EDMObject {
     drawTextLines(ctx, bottomLines, boxCenterX, bottomY, 22);
   }
 
+  showObjectTip(ctx) {
+    const x = this.x;
+    const y = this.y - 10;
+    const collectionName = "Collection: " + this.collectionName;
+    const simulatorStatus = getSimStatusDisplayValuesFromBit(
+      this.simulatorStatus
+    );
+
+    drawObjectInfoTip(ctx, x, y, collectionName, ...simulatorStatus);
+  }
+
   static setup(mcCollection) {
     for (const mcParticle of mcCollection) {
       const parentLength = mcParticle.oneToManyRelations["parents"].length;
diff --git a/data/particles.js b/mappings/particles.js
similarity index 100%
rename from data/particles.js
rename to mappings/particles.js
diff --git a/mappings/sim-status.js b/mappings/sim-status.js
new file mode 100644
index 00000000..db438605
--- /dev/null
+++ b/mappings/sim-status.js
@@ -0,0 +1,34 @@
+export const SimStatusBitFieldDisplayValues = {
+  23: "Overlay",
+  24: "Stopped",
+  25: "LeftDetector",
+  26: "DecayedInCalorimeter",
+  27: "DecayedInTracker",
+  28: "VertexIsNotEndpointOfParent",
+  29: "Backscatter",
+  30: "CreatedInSimulation",
+};
+
+export function parseBits(bit) {
+  const bits = [];
+
+  for (let i = 0; i < 32; i++) {
+    if (bit & (1 << i)) {
+      bits.push(i);
+    }
+  }
+
+  return bits;
+}
+
+export function getSimStatusDisplayValues(bits) {
+  return bits.map((bit) =>
+    SimStatusBitFieldDisplayValues[bit] !== undefined
+      ? SimStatusBitFieldDisplayValues[bit]
+      : `Bit ${bit}`
+  );
+}
+
+export function getSimStatusDisplayValuesFromBit(bit) {
+  return getSimStatusDisplayValues(parseBits(bit));
+}