Mansion Impossible

http://www.donpixel.com/play.php/en/051006012009/

Buy houses while they are still cheap and sell them again at high prices to make profit. The final goal of the game is to make enough money to buy the 10 Million Pound mansion.

There are so many different versions of this game around, I wonder which one is the original. Most of them have different sponsor logos, but essentially they're all the same, at least for me.