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
Survive as long as possible in Box Escape. In this 3D platform game you have to jump on different colored cubes to stay ahead from the rising waterlevel. Use the WASD keys to move and the left mouse button to enlarge the blocks.