RollerCoaster Tycoon 1 and 2 are such great games. The problem with RollerCoaster Tycoon Classic is that it's a port of a mobile/console version, so many things don’t work well on PC. The HUD is designed for touchscreens, and many important keyboard shortcuts don’t function properly since the game expects you to tap the screen. For a better PC experience, just buy the original RCT1 and RCT2 and play them with OpenRCT2—you’ll get the full, optimized classic gameplay without the mobile limitations.