Aspects of an incremental game

There are many parts to your average clicker game. They include: buildings, upgrades, clickables, resources, achievements, prestige, and of course a theme.

Buildings
Buildings are a simple aspect. You can buy them using a resource, and they generate an amount of resource per unit of time (in simpler games). Each time you buy them, the price increases. Though the effect is the same unless you get upgrades and stuff. As an example, they are the cursers, grandmas, farms etc. in cookie clicker

Upgrades
Upgrades are also a simple aspect. You spend a resource to buy them. They can do a variety of things, including upping the production power of buildings. They typically need to be unlocked. This can mean getting an amount of a building, or many other things. There is also sometimes upgrades that you use prestige to get. But more on that later.

Clickables
Clickables are very simple. they are the things you click to get resources. In cookie clicker, it is the big cookie. In games with multiple resources there can be multiple clickables, or the resource you get could be one of them.

Resources
Resources are what sticks together all the parts of the game. Even though there is only one in cookie clicker, some can have much more. The amount is determined by how simple or complex the game is.

Achievements
Achievements can be obtained many ways. There is also sometimes a resource that you obtain from achievements that helps you in the game. (Think milk and cats in cookie clicker.)

Prestige
Prestige is obtained from soft resetting your game (this resets many things). The amount you get depends on how good you're going. It can be spent on special upgrades that are more powerful. Not all games have prestige.

The Theme
The theme is the center of the game make it original.