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
Can you survive an arena full of spiders? Shoot them all down with a variety of guns, like a sniper and bazooka. Use the arrow keys to move, mouse to aim and shoot, space to jump and 1-6 for weapons.