Plain mechanics define Idle Theme Park where gravity is the core mechanic. i build rides to attract crowds and make money. The endless cycle can become annoying once you get the hang of it.
Clicking on buildings and dragging to place new rides is how you build, to attract crowds.
The main mechanic is gravity. The objective is to make money by attracting crowds. Stated features are not mentioned in the description.
Most of the time you must click on buildings to manage them. Dragging to place new rides is the stated mechanic.