http://store.steampowered.com/app/600420/

As promised, today, March 31 we are giving away for a limited time to our fans the original 1999 Mob Rule. 

Mob Rule was the follow up to the classic 1997 Constructor game. Released in 1999 on PC only, continued the cult following of Constructor. He is the US pack for you to see. 

Download load it now as a gift for free from System 3.

스팀 기프트 보다가 발견했는데 미국시간으로 3월31일 제한된 시간까지만

무료인 것 같습니다.

위에 링크에서 받으면 되는 것 같습니다.

스팀에서는 검색이 안되고 라이브러리에도 들어오지는 않네요;