Unity starter kits are assets designed to assist you to create a specific type of game. They contain the core programming needed to make games in a specific genre and we will talk about some of the game starter kits available in the asset store.
The first challenge when you have an idea for a game will be to establish the core game logic which may require a lot of programming. Thankfully there is an easy way if you want to make a game because you can look for a game started kit which will contain the core game logic programming. There is not a starter kit for every game genre but I will show you the best that I have found and tell you more about them.
Adventure Creator - Create adventure games without coding. This system allows you to make a point and click adventure game. Go back to the days of the early point and click games like Monkey Island and give them a modern twist.
Block Crusher Kit - Make a simple block crushing game with different options.
Ultimate Survival - Offers a comprehensive foundation for creating a survival game including scripts and game objects.
Pinball Creator - All you need to begin developing a pinball game including the ball and machine mechanics and missions.
Tower Defense Toolkit (TDTK) - Make tower defense games. A very comprehensive system for making the tower defense game you dream of. This kit is well put together and comes with some free models to get prototyping with and the video tutorials are very helpful when you are getting started and when you want to create your own towers.
Underscore Game Kit - Make a simple top down game with this starter kit which includes an easy to configure script for setting up the game.