Prior to launch, there will be two beta weekends for those who pre-purchase the game to get an early look.
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They also confirmed that RCTW will include Steam Workshop support at launch—which has certainly done wonders for extending the lifespan of city-building sim Cities: Skylines. RCTW will allow players to upload and share the coasters they build, custom scenery, and other assets, along with saved games and parks. According to Atari, creating your own scenery and "peeps" (park visitors) can be done with any 3D editing program compatible with Unity. Atari couldn't quite confirm there would be deeper mod support in the future, to allow custom-made rides or other changes to the core gameplay, though producer Matt Labunka told me it is "certainly something we're looking at."
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As in RCT3, you can also ride all of your attractions in first-person mode, and in addition to the free camera you'll be able to use an isometric view if that's your jam. RCTW also features gridless object placement to allow players to position buildings and rides at any angle they choose, though there will be an option to 'snap' things in place for more casual players (like me).