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.

Godot Engine - The free and open source 2D and 3D game engine

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.

Projects that have advertised as not using generative AI their creative process.

Near infinitely replayable games that usually feature, random generation, perma-death, and brutal difficulty. 

Products that involve or comprise source code, including programming games; does not refer to products with their own source code available, open source or not.

Featuring gameplay inspired by the "Vampire Survivors" genre, these projects typically involve controlling a character who automatically attacks while facing waves of enemies. Players focus on movement, survival, and strategic ability upgrades as they progress through increasingly difficult encounters.

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