No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $12.8K — a different platform, not this one.

Constructor Classic 1997

Constructor: It’s your city…DEAL WITH IT! Constructor is an exciting game of strategic action and ruthless acquisition where you’re constantly having to watch your back! You might be a small property developer but you fully intend to control the city…by whatever means necessary! Manage your resources and workforce with an iron fist, just don’t forget to keep your enemies at bay… Constructor is a mission-based game of strategy, resource management, action and acquisition. You are an ambitious property developer and your objective is to control as much of the city as possible, by whatever means necessary! You begin with several land sites within the city and a small band of workers. Depending on your skills, financial resources, type of workforce and level of ruthlessness, you’ll be able to create high value residences and business throughout the neighbourhood. In addition to building property you’ll also take an active interest in their décor and fittings. And always remember; while a happy tenant always pays you rent on time, unhappy ones will need to be dealt with…