Chrome 42+ disables NPAPI plugins like Unity3d plugin.
Copy and paste the following text into your browser: chrome://flags/#enable-npapi and enable the NPAPI plugin.
Or try another browser like Firefox
Take on the role of a real lion in Wild Life: Lion. Sneak around and catch your prey. Use WASD to move, mouse to look, E to use your claws, Q to bite, space to jump and Shift to run.