Leo smiled, leaned back against his pillow, and pressed the '5' key to accelerate into the neon, top-down sunset. Further Exploration

The answer lies in three trends:

On many modern Nokia handsets, games like Racing Attack are provided as "Try and Buy" demos, typically offering only five free trials before requiring a paid activation code. How to Unlock Racing Attack

If you manage to get a code but it doesn't work, try these fixes: