- Tappy Chicken uses actor based menu, they make actors tha acts like menu buttons and detect OnClicked event on it
- That depends on what kind of game you making, if level can be generated and you can fit everything in single level you use single level which has menu mode. If you already have levels separated or you plan to have them separated then yes you create special level just for main menu and set it as entry level of your project
- Tappy Chicken got everything in single level, as it’s generate level. The level blueprint they made starts the level by showing menu, the constract of that depends on what game you making and what kind of menu you want.