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diff --git a/src/main/java/eu/svjatoslav/sixth/e3d/examples/life/Cell.java b/src/main/java/eu/svjatoslav/sixth/e3d/examples/life/Cell.java
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index 0000000..4d1cca0
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+++ b/src/main/java/eu/svjatoslav/sixth/e3d/examples/life/Cell.java
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+package eu.svjatoslav.sixth.e3d.examples.life;
+
+import eu.svjatoslav.sixth.e3d.geometry.Point3D;
+import eu.svjatoslav.sixth.e3d.gui.humaninput.MouseInteractionController;
+import eu.svjatoslav.sixth.e3d.renderer.raster.Color;
+import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.solidpolygon.SolidPolygon;
+import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.base.AbstractCompositeShape;
+
+/**
+ * This class corresponds to a single cell within matrix.
+ */
+public class Cell extends AbstractCompositeShape implements
+        MouseInteractionController {
+
+    /**
+     * cell visual size
+     */
+    public static final int SIZE = 20;
+    /**
+     * Color of the active cell (R, G, B, A)
+     */
+    private static final Color ACTIVE_COLOR = new Color("A8FF");
+    /**
+     * Color of the active cell (R, G, B, A) while mouse is over it.
+     */
+    private static final Color ACTIVE_COLOR_MOUSE_OVER = new Color("F9FF");
+    /**
+     * Color of the inactive cell (R, G, B, A)
+     */
+    private static final Color INACTIVE_COLOR = new Color("55F5");
+    /**
+     * Color of the inactive cell (R, G, B, A) while mouse is over it.
+     */
+    private static final Color INACTIVE_COLOR_MOUSE_OVER = new Color("77F7");
+    /**
+     * A placeholder variable to help in next generation computation. Indicates
+     * whether cell is going to survive within next generation.
+     */
+    public boolean survives;
+    /**
+     * Indicates whether cell is currently active
+     */
+    private boolean active;
+    /**
+     * Indicates whether mouse pointer is currently over this cell.
+     */
+    private boolean isMouseOver = false;
+
+    public Cell(final Point3D center) {
+        super(center);
+
+        createCellShape();
+
+        // enable receiving of mouse events
+        setMouseInteractionController(this);
+    }
+
+    private void createCellShape() {
+        final double halfSize = SIZE / 2;
+
+        // define 4 points corresponding to cell borders
+        final Point3D p1 = new Point3D(-halfSize, 0, -halfSize);
+
+        final Point3D p2 = new Point3D(+halfSize, 0, -halfSize);
+
+        final Point3D p3 = new Point3D(+halfSize, 0, +halfSize);
+
+        final Point3D p4 = new Point3D(-halfSize, 0, +halfSize);
+
+        // connect 4 points with 2 polygons
+        addShape(new SolidPolygon(p1, p2, p3, computeCellColor()));
+        addShape(new SolidPolygon(p1, p4, p3, computeCellColor()));
+    }
+
+    /**
+     * Compute cell color depending if cell is active and if mouse is over the
+     * cell.
+     */
+    private Color computeCellColor() {
+        if (active)
+            if (isMouseOver)
+                return ACTIVE_COLOR_MOUSE_OVER;
+            else
+                return ACTIVE_COLOR;
+        else if (isMouseOver)
+            return INACTIVE_COLOR_MOUSE_OVER;
+        else
+            return INACTIVE_COLOR;
+    }
+
+    public boolean isActive() {
+        return active;
+    }
+
+    public void setActive(final boolean active) {
+        this.active = active;
+        updateColor();
+    }
+
+    @Override
+    public void mouseClicked() {
+        setActive(!isActive());
+    }
+
+    @Override
+    public void mouseEntered() {
+        setMouseOver(true);
+    }
+
+    @Override
+    public void mouseExited() {
+        setMouseOver(false);
+    }
+
+    private void setMouseOver(final boolean isMouseOver) {
+        this.isMouseOver = isMouseOver;
+        updateColor();
+    }
+
+    /**
+     * This method is called when cell status is changed to update its color
+     * too.
+     */
+    private void updateColor() {
+        setColor(computeCellColor());
+    }
+
+}