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diff --git a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOnCircle.prefab b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOnCircle.prefab
index 52a30343468fc8d7036d9914babb4e9d9593bd4e..f44981935bb3f9fd756ae9181a7994f1438e7918 100644
--- a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOnCircle.prefab
+++ b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOnCircle.prefab
@@ -16,6 +16,7 @@ GameObject:
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diff --git a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOnLine.prefab b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOnLine.prefab
index 555b8b19e60aa487946e9ede1e6f62b94e2d7e7a..d716e01f047f02bc70ecd3cb0101211e5adb255d 100644
--- a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOnLine.prefab
+++ b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOnLine.prefab
@@ -286,6 +286,7 @@ GameObject:
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@@ -417,3 +418,18 @@ MonoBehaviour:
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diff --git a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOrthogonalCircleLine.prefab b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOrthogonalCircleLine.prefab
index dccfcd05928dee5d0c58154f755b3d1549491139..249206c5ed91b5ed81288e563037fa31391843fc 100644
--- a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOrthogonalCircleLine.prefab
+++ b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayOrthogonalCircleLine.prefab
@@ -286,6 +286,7 @@ GameObject:
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@@ -417,3 +418,18 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   factExplorerPrefab: {fileID: 5592893003942163674, guid: ff7415df1aac19c41a7855516a108a8a,
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diff --git a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayParallelLine.prefab b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayParallelLine.prefab
index 3f39a3257dc34066059d56075bd7c5e375568dba..d8f691b1f9cbb2d86721f3b70c062068f4a8a4a1 100644
--- a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayParallelLine.prefab
+++ b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayParallelLine.prefab
@@ -151,6 +151,7 @@ GameObject:
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+  - component: {fileID: -8573552533908309515}
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@@ -282,6 +283,21 @@ MonoBehaviour:
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diff --git a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayPoint.prefab b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayPoint.prefab
index 5b4cba7a828c01fc12b8d2b9f336bd82313fb742..313f668d3961bdbe9931f13ffca64e1999125b03 100644
--- a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayPoint.prefab
+++ b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayPoint.prefab
@@ -16,6 +16,7 @@ GameObject:
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+  - component: {fileID: -7957010930568868188}
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@@ -146,6 +147,21 @@ MonoBehaviour:
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 --- !u!1 &858001164857725565
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diff --git a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRadius.prefab b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRadius.prefab
index 696cb1da2868f906985e00eed0062203db33e7f3..8e4329173adb48938750e35ddd46b552146f85b8 100644
--- a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRadius.prefab
+++ b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRadius.prefab
@@ -16,6 +16,7 @@ GameObject:
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+  - component: {fileID: -2247250977338064909}
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@@ -146,6 +147,21 @@ MonoBehaviour:
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diff --git a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRectangleFact.prefab b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRectangleFact.prefab
index 56605d311fbfc9427a7730cd96e348b56d93f846..99368671ea20c7fc5797d4a113efaf8e00228410 100644
--- a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRectangleFact.prefab
+++ b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRectangleFact.prefab
@@ -556,6 +556,7 @@ GameObject:
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+  - component: {fileID: -4240360816424112390}
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@@ -689,3 +690,18 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
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diff --git a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRightAngle.prefab b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRightAngle.prefab
index 9a78be85a5ee861147e1316fb687aa966acc8072..ee4bf0104f3cb9f320e325d3bbd502ba1724d948 100644
--- a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRightAngle.prefab
+++ b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayRightAngle.prefab
@@ -151,6 +151,7 @@ GameObject:
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+  - component: {fileID: 493413251982980403}
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@@ -283,6 +284,21 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
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+    type: 3}
 --- !u!1 &7613847065484003782
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diff --git a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayTestFact.prefab b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayTestFact.prefab
index 4b7af4aba5baccbd08779fc48b21ec2368822da3..996ad40446fd0d0dc143ce872f3924147882b374 100644
--- a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayTestFact.prefab
+++ b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayTestFact.prefab
@@ -16,6 +16,7 @@ GameObject:
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+  - component: {fileID: -7305694658926121836}
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   m_Name: DisplayTestFact
   m_TagString: Untagged
@@ -145,3 +146,18 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
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diff --git a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayTruncatedConeVolume.prefab b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayTruncatedConeVolume.prefab
index 3f8ae469cef70c4fe081985ca790a468f503c5bc..369fc8b4132d483f222f901184717133ebe12480 100644
--- a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayTruncatedConeVolume.prefab
+++ b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayTruncatedConeVolume.prefab
@@ -16,6 +16,7 @@ GameObject:
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diff --git a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayUnequalCircles.prefab b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayUnequalCircles.prefab
index 63e3d0d5ecc6b75e5ba11879987358c9515378a9..9ddddce91ae67b8c2e1a3876cfaff65b83868a4e 100644
--- a/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayUnequalCircles.prefab
+++ b/Assets/Resources/Prefabs/UI/Icons/FactIcons/DisplayUnequalCircles.prefab
@@ -151,6 +151,7 @@ GameObject:
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   m_EditorClassIdentifier: 
   factExplorerPrefab: {fileID: 5592893003942163674, guid: ff7415df1aac19c41a7855516a108a8a,
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diff --git a/Assets/Scripts/UI/FactExplorer/FactFavorisation.cs b/Assets/Scripts/UI/FactExplorer/FactFavorisation.cs
new file mode 100644
index 0000000000000000000000000000000000000000..3de65219a967d43d3e8b0dc375eea864a3d37114
--- /dev/null
+++ b/Assets/Scripts/UI/FactExplorer/FactFavorisation.cs
@@ -0,0 +1,84 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.EventSystems;
+
+[RequireComponent(typeof(FactWrapper))]
+public class FactFavorisation : MonoBehaviour, IPointerClickHandler
+{
+    #region InspectorVariables
+    [Header("Prefabs")]
+    [SerializeField] private GameObject favoriteDisplayPrefab;
+    #endregion InspectorVariables
+
+    #region Static Variables
+    private static readonly UnityEvent<Fact, bool> ChangeFavoriteEvent = new();
+    private static readonly List<Fact> favorites = new();
+    #endregion Static Variables
+
+    #region Variables
+    private GameObject favoriteDisplay;
+    private Fact fact;
+    #endregion Variables
+
+    #region Properties
+    private bool isFavorite = false;
+    public bool IsFavorite
+    {
+        get { return isFavorite; }
+        set { ChangeFavoriteEvent.Invoke(fact, value); }
+    }
+    #endregion Properties
+
+    #region UnityMethods
+    public void OnPointerClick(PointerEventData eventData)
+    {
+        // TODO: add support for other input systems
+        if (eventData.button == PointerEventData.InputButton.Middle)
+        {
+            // write to property to invoke event
+            IsFavorite = !IsFavorite;
+
+            // update favorites list
+            if (isFavorite)
+                favorites.Add(fact);
+            else
+                favorites.Remove(fact);
+        }
+    }
+
+    private void Start()
+    {
+        fact = transform.GetComponent<FactWrapper>().fact;
+        ChangeFavoriteEvent.AddListener(OnFavoriteChange);
+
+        // check if fact is currenty a favorite
+        if (favorites.Contains(fact))
+        {
+            isFavorite = true;
+            UpdateDisplay();
+        }  
+    }
+    #endregion UnityMethods
+
+    #region Implementation
+    private void OnFavoriteChange(Fact changedFact, bool isFavourite)
+    {
+        if (fact == changedFact)
+        {
+            this.isFavorite = isFavourite;
+            UpdateDisplay();
+        }
+    }
+
+    private void UpdateDisplay()
+    {
+        if (!isFavorite)
+            Destroy(favoriteDisplay);
+        else
+            if (!favoriteDisplay)
+                favoriteDisplay = Instantiate(favoriteDisplayPrefab, transform);
+    }
+    #endregion Implementation
+}
diff --git a/Assets/Scripts/UI/FactExplorer/FactFavorisation.cs.meta b/Assets/Scripts/UI/FactExplorer/FactFavorisation.cs.meta
new file mode 100644
index 0000000000000000000000000000000000000000..a0d2b6f51ce6e11c9d870d6b32ca29274cc12795
--- /dev/null
+++ b/Assets/Scripts/UI/FactExplorer/FactFavorisation.cs.meta
@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 88f8f222eb0a4a246908bde097a8726e
+MonoImporter:
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