'The PC version of Rollercoaster Tycoon 4 will be released in "holiday 2014" (Christmas period).'
http://www.eurogamer.net/articles/2014-04-14-rollercoaster-tycoon-4-headed-to-pc-for-holiday-2014
I haven't played RCT but I think you might like the Tropico games, 4 being the latest with 5 to be released later this month.
I really enjoyed RCT1 and 2, not really gotten into 3 and 4 was originally a mobile game. Apparently its been re-made for PC (hope that isn't long winded for 'ported'). See what Christmastime brings!
I really loved it - that feeling when I made a theme park completely sustainable was GREAT. I just used to leave my PC running all day and when I came back I'd have millions! Also - putting the prices of umbrellas up to £10 when it rained
Or picking up the people and dropping them in water - or popping the balloons!
I hope the new one is good