diff --git a/WorldBuilder/Components/WorldCardView.swift b/WorldBuilder/Components/WorldCardView.swift
index 43436e7..387aae6 100644
--- a/WorldBuilder/Components/WorldCardView.swift
+++ b/WorldBuilder/Components/WorldCardView.swift
@@ -9,11 +9,40 @@ import SwiftUI
 
 struct WorldCardView : View {
     var world : World
+    var isSelected = false
     
     var body : some View {
-        VStack {
-            Text(world.name)
+        ZStack(alignment: .bottom) {
+            LinearGradient(
+                colors: [.clear, .black.opacity(0.5)],
+                startPoint: .top,
+                endPoint: .bottom
+            )
+            
+            HStack(alignment: .bottom) {
+                Text(world.name)
+                    .foregroundStyle(.white)
+                    .font(.headline)
+
+                Spacer()
+
+                if isSelected {
+                    Image(systemName: "checkmark.circle.fill")
+                        .font(.system(size: 28))
+                        .foregroundStyle(.white, .indigo)
+                }
+            }
+            .padding(.vertical, 8)
+            .padding(.horizontal, 4)
+            
         }
-        .background(.red)
+        .frame(height: 220)
+        .background {
+            Image(systemName: "globe.europe.africa")
+                .resizable()
+                .scaledToFill()
+        }
+        .clipShape(RoundedRectangle(cornerRadius: 20))
+        .contentShape(RoundedRectangle(cornerRadius: 20))
     }
 }
diff --git a/WorldBuilder/Components/MainTabView.swift b/WorldBuilder/MainTabView.swift
similarity index 100%
rename from WorldBuilder/Components/MainTabView.swift
rename to WorldBuilder/MainTabView.swift
diff --git a/WorldBuilder/Models/World.swift b/WorldBuilder/Models/World.swift
index 447240f..4f28ae8 100644
--- a/WorldBuilder/Models/World.swift
+++ b/WorldBuilder/Models/World.swift
@@ -23,4 +23,13 @@ class World {
         self.createdAt = Date()
         self.updatedAt = Date()
     }
+    
+    func duplicate() -> World {
+        let newWorld = World(
+            name: self.name, overview: self.overview
+        )
+        
+        return newWorld
+    }
+    
 }
diff --git a/WorldBuilder/Views/WorldList/Components/WorldListHeaderView.swift b/WorldBuilder/Views/WorldList/Components/WorldListHeaderView.swift
index cce0452..5b7c067 100644
--- a/WorldBuilder/Views/WorldList/Components/WorldListHeaderView.swift
+++ b/WorldBuilder/Views/WorldList/Components/WorldListHeaderView.swift
@@ -20,9 +20,6 @@ struct WorldListHeaderView : View {
             )
             .font(.subheadline)
             .foregroundStyle(.secondary)
-            
         }
-        .padding(.vertical, 50)
-        .padding(.horizontal, 10)
     }
 }
diff --git a/WorldBuilder/Views/WorldList/Modifiers/WorldListAreaInsetModifier.swift b/WorldBuilder/Views/WorldList/Modifiers/WorldListAreaInsetModifier.swift
new file mode 100644
index 0000000..1c56aa2
--- /dev/null
+++ b/WorldBuilder/Views/WorldList/Modifiers/WorldListAreaInsetModifier.swift
@@ -0,0 +1,51 @@
+//
+//  WorldListAreaInsetModifier.swift
+//  WorldBuilder
+//
+//  Created by Giovanni Josserand on 03/09/2026.
+//
+
+import SwiftUI
+import SwiftData
+
+struct WorldListAreaInsetModifier : ViewModifier {
+    let isSelecting : Bool
+    @Binding var selectedWorlds : Set<World.ID>
+    let worlds : [World]
+    
+    @Environment(\.modelContext) private var context
+    
+    func body(content: Content) -> some View {
+        content
+            .safeAreaInset(edge: .bottom){
+                if isSelecting && !selectedWorlds.isEmpty {
+                    HStack {
+                        let worldsToAction = worlds.filter { world in
+                            selectedWorlds.contains(world.id)
+                        }
+                        Spacer()
+                        
+                        Button {
+                            for world in worldsToAction {
+                                context.insert(world.duplicate())
+                            }
+                        } label: {
+                            Label("Dupliquer", systemImage: "plus.square.on.square")
+                        }
+                        
+                        Spacer()
+                        
+                        Button(role: .destructive){
+                            for world in worldsToAction {
+                                context.delete(world)
+                            }
+                        }label : {
+                            Label("Supprimer", systemImage: "trash")
+                        }
+                        Spacer()
+                    }
+                }
+            }
+
+    }
+}
diff --git a/WorldBuilder/Views/WorldList/Modifiers/WorldListToolbarModifier.swift b/WorldBuilder/Views/WorldList/Modifiers/WorldListToolbarModifier.swift
new file mode 100644
index 0000000..e3e9370
--- /dev/null
+++ b/WorldBuilder/Views/WorldList/Modifiers/WorldListToolbarModifier.swift
@@ -0,0 +1,41 @@
+//
+//  WorldListToolbarView.swift
+//  WorldBuilder
+//
+//  Created by Giovanni Josserand on 03/09/2026.
+//
+
+import SwiftUI
+
+struct WorldListToolbarModifier : ViewModifier {
+    @Binding var isSelecting : Bool
+    @Binding var selectedWorlds : Set<World.ID>
+    
+    func body(content: Content) -> some View {
+        content
+            .toolbar{
+                ToolbarItem(placement: .topBarLeading) {
+                    if isSelecting {
+                        Button("Annuler") {
+                            selectedWorlds.removeAll()
+                            isSelecting = false
+                        }
+                    } else {
+                        Button("Sélectionner") {
+                            isSelecting = true
+                        }
+                    }
+                }
+                
+                ToolbarItem(placement: .topBarTrailing) {
+                    if !isSelecting {
+                        NavigationLink {
+                            CreateWorldView()
+                        } label: {
+                            Image(systemName: "plus")
+                        }
+                    }
+                }
+            }
+    }
+}
diff --git a/WorldBuilder/Views/WorldList/WorldListView.swift b/WorldBuilder/Views/WorldList/WorldListView.swift
index a413493..eacf04b 100644
--- a/WorldBuilder/Views/WorldList/WorldListView.swift
+++ b/WorldBuilder/Views/WorldList/WorldListView.swift
@@ -13,6 +13,10 @@ struct WorldListView: View {
     @Query(sort: \World.createdAt, order: .reverse)
     private var worlds: [World]
     let columns = [GridItem(.flexible()), GridItem(.flexible())]
+    
+    @State private var isSelecting = false
+    @State private var selectedWorlds = Set<World.ID>()
+    
 
     var body: some View {
         ScrollView {
@@ -24,16 +28,58 @@ struct WorldListView: View {
                 }else{
                     LazyVGrid(columns: columns){
                         ForEach(worlds) {world in
-                            NavigationLink{
-                                WorldOverviewView()
-                            } label: {
-                                WorldCardView(world: world)
+                            if isSelecting {
+                                WorldCardView(
+                                    world: world,
+                                    isSelected: selectedWorlds.contains(world.id)
+                                )
+                                .onTapGesture {
+                                    if selectedWorlds.contains(world.id) {
+                                        selectedWorlds.remove(world.id)
+                                    } else {
+                                        selectedWorlds.insert(world.id)
+                                    }
+                                }
+                                
+                            }else {
+                                NavigationLink{
+                                    WorldOverviewView()
+                                } label: {
+                                    WorldCardView(world: world)
+                                }
+                                .contextMenu{
+                                    Button {
+                                        context.insert(world.duplicate())
+                                    } label: {
+                                        Label("Dupliquer", systemImage: "plus.square.on.square")
+                                    }
+                                    
+                                    Button(role: .destructive){
+                                        context.delete(world)
+                                    }label : {
+                                        Label("Supprimer", systemImage: "trash")
+                                    }
+                                }
                             }
                         }
                     }
                 }
             }
+            .padding(.horizontal, 8)
             .frame(maxHeight: .infinity, alignment: .topLeading)
+            .modifier(
+                WorldListAreaInsetModifier(
+                    isSelecting: isSelecting,
+                    selectedWorlds: $selectedWorlds,
+                    worlds: worlds
+                )
+            )
         }
+        .modifier(
+            WorldListToolbarModifier(
+                isSelecting: $isSelecting,
+                selectedWorlds: $selectedWorlds
+            )
+        )
     }
 }