itch.io

A style of game where the player must click on something to earn points, which they spend on upgrades to increase the number of points they earn per click, or to increase the number of points they earn over a period of time without clicking.

Set in a fictional universe, often (but not always) with fantastic or supernatural elements, alternate worlds, magic and monsters.

Only requires a single button (commonly the left mouse button or a single key on the keyboard) to operate the game's controls or interact with it.

Resources for building and relating to User Interfaces, how the user interacts with your program