Demolition City games competition

Demolition News has started a competition and it involves playing a demolition game which is free to play online.

All you have to do is click on this link and you will be taken to a page with the game on. Then just start planting explosives and blowing up building structures. Once you have gone as far as you can print screen your high score and head on over to Demolition News to submit it and hopefully win a prize.

Here's my attempt, but I see it has already been beaten on Demolition News: