itch.io

Uses two-dimensional "sprites", 2D images created and used on a flat plane, as opposed to the three-dimensional models or environments found in 3D games.

Focusing on automation and minimal player interaction, idle games let you watch progress unfold over time. Players often engage in occasional interactions like upgrades to influence growth rates or efficiencies, while the game typically accumulates resources autonomously.

A template project to get you started developing a certain kind of thing.

Unity is a game engine for 2D, 3D, AR and more