Yeah like wtf you didn't say anything about the gameplay
it's basically rollercoaster tycoon 2, but some new things are added
- cheat menu, to allow things like making the game go beyond limits (allow all vehicle types, increase maxspeed, lots)
- actual online multiplayer with large servers, make rollercoasters with friends or just stuffpost like what happened to joel on vinesauce
- twitch support allows you to see chat messages as "news", and visitors can be named after followers
a lot more features that got added or reintroduced are available here:
https://github.com/OpenRCT2/OpenRCT2/wiki/Changes-to-original-game