This is a paid asset, but now you can download Idle Restaurant for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
Idle Restaurant v1.1
Idle Restaurant is a complete project template that will help you create a great Idle Games like Idle Miner Tycoon, Idle Restaurant Tycoon… You only need change the graphic, advertising ID and publish on Google Play or App Store . The project includes many game features like Admob, Unity Ads, In App Purchase and Firebase Analytics. The project use Unity new version (2019.x) so your game has highest performance and support all mobile device generation
Features
Automate your workflow to increase your idle income
Get idle cash, even when you are offline
Hire managers to increase your workers’ motivation
Profit from a smart investment or two to boost your economy
Easy to reskin with texture package
Unity Ads reward video to get free coin
Firebase Analytics to track user behaviors
In App purchase (Token Packages)
Support control for Android and IOS
Unity 2019.x