RollerCoaster Tycoon (thing)

They each add the following new features to the game:

Corkscrew Follies (aka Added Attractions)

• 30 new scenarios
• New coasters (Steel Twister, Side Friction Coaster, etc)
• New themes (Jungle, Jurassic)
• New shops (seafood, hat stall, etc)
• One-way signs to keep guests out of certian areas
• Painted roller coaster track sections

• 30 new scenarios (Many are time-unlimited)
• 6 new themes
• New coasters
• "Sandbox" level (Arid Heights)
• Synchronized Pricing