It's an oldie, but a goldie. You can claim and grab Constructor, a classic title from 1997.  In the game, packed with humorous undertones, the player controls a construction company in a map split between several estates, and must deal with other teams to win the game.

About the game:

The player controls a construction company, and aim to drive the other players out of business. Using teams of workers and foremen, the player must build facilities to manufacture building materials (a sawmill, concrete works, etc.), in order to build houses (ranging from simple wooden cabins to large mansions) in which to house tenants who pay rent and thus fund the company, as well as producing new workers, tenants and other characters. Along the way, the player can build homes for undesirables such as gangsters and hippies, who work to undermine the enemy. As all games on GOG, this is a DRM-free version of the game. Enjoy playing!

To get your free copy, you’ll need to head over to GOG after, and enter the voucher code ZVSYRAFB