diff --git a/src/index.html b/src/index.html
index 5f6364c..294c3ea 100644
--- a/src/index.html
+++ b/src/index.html
@@ -58,6 +58,9 @@
 			</li>
 			<li>
 				Projection Matrix: <input type="range" min=0 max=1 step=0.01 value=0 id="interpolateProjection" autocomplete="off" disabled="yes">
+				<ul>
+					<li>Invert Z-Axis: <input type="checkbox" id="invertZAxis" checked autocomplete="off"></li>
+				</ul>
 			</li>
 			<li>
 				Use virtual camera: <input type="checkbox" id="displayMatricesVirtually" checked autocomplete="off">
diff --git a/src/script.js b/src/script.js
index 1473344..9345170 100644
--- a/src/script.js
+++ b/src/script.js
@@ -31,6 +31,8 @@ let interpolateLookAt = 0;
 let displayMatricesVirtually = true;
 let virtualRealInterpolation = 1;
 
+let invertZAxis = true;
+
 let cameraPitch = 0.565;
 let cameraYaw = 0.375;
 let cameraDistance = 4;
@@ -57,6 +59,9 @@ async function init() {
 			document.getElementById("interpolateLookAt").disabled = "yes";
 		}
 	});
+	document.getElementById("invertZAxis").addEventListener("input", (e) => {
+		invertZAxis = e.target.checked;
+	});
 	document.getElementById("interpolateLookAt").addEventListener("input", (e) => {
 		interpolateLookAt = e.target.value;
 		if (interpolateLookAt >= 1) {
@@ -454,9 +459,6 @@ async function draw() {
 	let realCameraPosition = [Math.cos(cameraYaw) * smoothCameraDistance * Math.cos(cameraPitch), Math.sin(cameraPitch) * smoothCameraDistance, Math.sin(cameraYaw) * smoothCameraDistance * Math.cos(cameraPitch)];
 	let realCameraLookAt = [0, 0, 0];
 	let realCameraUp = [0, 1, 0];
-	// if (cameraPitch > -0.1) {
-	// 	realCameraUp = [Math.cos(cameraYaw), 0, Math.sin(cameraYaw)];
-	// }
 	mat4BuildLookAt(realViewMatrix, realCameraPosition, realCameraLookAt, realCameraUp);
 
 	mat4Interpolate(realProjectionMatrix, identity, realProjectionMatrix, virtualRealInterpolation * virtualRealInterpolation);
@@ -478,11 +480,13 @@ async function draw() {
 
 	let virtualProjectionMatrix = [];
 	mat4BuildPerspective(virtualProjectionMatrix, 90.0 / 180.0 * Math.PI, cv.width / cv.height, 1, 5);
-	if (displayMatricesVirtually) {
-		// virtualProjectionMatrix[8] *= -1;
-		// virtualProjectionMatrix[9] *= -1;
-		// virtualProjectionMatrix[10] *= -1;
-		// virtualProjectionMatrix[11] *= -1;
+
+	if (!invertZAxis) {
+		let zAxisFlipMatrix = [];
+		mat4Identity(zAxisFlipMatrix);
+		zAxisFlipMatrix[10] = -1;
+		mat4Interpolate(zAxisFlipMatrix, identity, zAxisFlipMatrix, virtualRealInterpolation);
+		mat4Multiply(virtualProjectionMatrix, zAxisFlipMatrix, virtualProjectionMatrix);
 	}
 
 	let inverseVirtualProjectionMatrix = [];