diff --git a/src/gui/PivotGui.cpp b/src/gui/PivotGui.cpp
index 252410a..2be47f7 100644
--- a/src/gui/PivotGui.cpp
+++ b/src/gui/PivotGui.cpp
@@ -16,37 +16,62 @@ void PivotGui::Render() {
 	if (show_demo_window)
 		ImGui::ShowDemoWindow(&show_demo_window);
 
-	// 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
-	{
-		static float f = 0.0f;
-		static int counter = 0;
+	// 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window
+	static float f = 0.0f;
+	static int counter = 0;
 
-		ImGui::Begin("Hello, world!");	// Create a window called "Hello, world!" and append into it.
+	ImGui::Begin("Hello, world!");	// Create a window called "Hello, world!" and append into it.
 
-		ImGui::Text("This is some useful text.");			// Display some text (you can use a format strings too)
-		ImGui::Checkbox("Demo Window", &show_demo_window);	// Edit bools storing our window open/close state
-		ImGui::Checkbox("Another Window", &show_another_window);
+	ImGui::Text("This is some useful text.");			// Display some text (you can use a format strings too)
+	ImGui::Checkbox("Demo Window", &show_demo_window);	// Edit bools storing our window open/close state
+	ImGui::End();
 
-		ImGui::SliderFloat("float", &f, 0.0f, 1.0f);  // Edit 1 float using a slider from 0.0f to 1.0f
+	// 3. Interface of Pivot
+	ImVec4 bg_color = {0.18, 0.8, 1, 0.8};
+	ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoScrollbar;
+	ImVec2 window_pos = {0, 0};
+	ImVec2 window_size = ImGui::GetIO().DisplaySize;
+	ImVec2 vertical_spacing = {0, 40};
 
-		if (ImGui::Button("Button"))  // Buttons return true when clicked (most widgets return true when edited/activated)
-			counter++;
-		ImGui::SameLine();
-		ImGui::Text("counter = %d", counter);
+	ImGui::SetNextWindowPos(window_pos);
+	ImGui::SetNextWindowSize(window_size);
+	ImGui::PushStyleColor(ImGuiCol_WindowBg, bg_color);
+	ImGui::Begin("Pivot", nullptr, window_flags);
 
-		ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
-		ImGui::End();
-	}
+	ImGui::Text("Matrice :");
+	
+	ImGui::Dummy(vertical_spacing);
 
-	// 3. Show another simple window.
-	if (show_another_window) {
-		ImGui::Begin("Another Window", &show_another_window);  // Pass a pointer to our bool variable (the window will have a closing
-															   // button that will clear the bool when clicked)
-		ImGui::Text("Hello from another window!");
-		if (ImGui::Button("Close Me"))
-			show_another_window = false;
-		ImGui::End();
-	}
+	static char selected[4][4] = {{1, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}};
+
+	// Add in a bit of silly fun...
+	const float time = (float)ImGui::GetTime();
+
+	for (int y = 0; y < 4; y++)
+		for (int x = 0; x < 4; x++) {
+			if (x > 0)
+				ImGui::SameLine();
+			ImGui::PushID(y * 4 + x);
+			if (ImGui::Selectable("?", selected[y][x] != 0, 0, ImVec2(50, 50))) {
+				// Toggle clicked cell + toggle neighbors
+				selected[y][x] ^= 1;
+				if (x > 0) {
+					selected[y][x - 1] ^= 1;
+				}
+				if (x < 3) {
+					selected[y][x + 1] ^= 1;
+				}
+				if (y > 0) {
+					selected[y - 1][x] ^= 1;
+				}
+				if (y < 3) {
+					selected[y + 1][x] ^= 1;
+				}
+			}
+			ImGui::PopID();
+		}
+	ImGui::PopStyleColor();
+	ImGui::End();
 }
 
 void PivotGui::Destroy() {}