This game blew me away as a little Banzaiaap and it still does this regularly these days, when I start it up. It's now on sale on Direct 2 Drive for around $3-4! It even comes with the Expansion: Wacky Worlds! 
 
http://www.direct2drive.co.uk/2/37/product/37/product/Buy-RollerCoaster-Tycoon®-2:-Combo-Park-Pack-with-Wacky-Worlds-Expansion-Download

I would have got it if it were on Steam. I wish it would go on there. I paid about £10 for the near-complete pack (excluding the first game).

Banzaiaap

I still have my original copy.  What I need is the first RCT.  I still have the discs for the Loopy Landscapes and Corckscrew Follies expansion packs, but I lost the disc to the original game a while ago.
 
Still one of my favorite and most played games of all time.

This was my favourite in the series! Going to boot up my windows partition and download it. Thanks for the link

" I still have my original copy.  What I need is the first RCT.  I still have the discs for the Loopy Landscapes and Corckscrew Follies expansion packs, but I lost the disc to the original game a while ago.  Still one of my favorite and most played games of all time. "

I think I have two copes of the first game, no idea where though.

Still have my original copy, love that game. Build vertical Launch thrill ride, set launch speed to max, watch people explode.