Game Development
Included are some resources for you to aid (or get started) on your game development process. If you want to add composing music and designing assets yourself for your own game, head on over to the Music Resources and Design Tool sections to check the options.
Awesome Gamedev (by Calinou)
An awesome list on free and open source software and free cultures to aid you in your game developing process.
Blender
A free and open source 3D modelling software. Despite being in the game dev't section, it could be used for things outside of game development such as 3D animations and illustrations.
Boundary Break video series by Shesez
A YouTube video series by Shesez where he plays video games outside of gameplay boundaries. If you want to see how video games set are made, this can be a good starting point.
Byond
A platform for creating and maintaining your online multiplayer games. Offers a custom language in order to create one and it is free, after all (I mean it wouldn't be listed here if it wasn't).
CS50's Introduction to Game Development
One of CS50x's branching course. This time they introduce you to the game development process. Just like CS50, it offers you challenging problem sets to be able to get a solid grasp after lectures.
Personal comment:
I mean it's CS50, I totally recommend this one.
Game Jolt
One of the go-to game marketplace for indie game developers. As such, you can explore, meet, and create your audience and fellow game developers. Submitted games vary from its genre, quality, and pricing. Think Steam but for indie game devs with their own client, forums, and game jams.
Game Programming Patterns
A free web-based book that discusses about different coding patterns that is usually found on game development.
Personal comment:
Recommending this so much when starting out with game development.
GDevelop
A free and open source app for game creation. You could create games without programming skills, a suitable tool for introducing to game development (and programming, overall).
Godot Engine
A free and open source cross-platform 2D and 3D game engine. You can visit the source code repo right here.
Personal comment:
I recommend this very much especially with their free asset store.
itch.io
Similar to Game Jolt, it is one of the biggest indie game marketplace for indie game developers who are living the indie game dev life (or aspires to be one). Like Game Jolt, they provide more than games like game jams, an asset store, and a forum.
Kenney
It's a company that creates free game assets (both 2D and 3D and varies between graphics and audio) with no strings attached as all of their assets are released under Public Domain CC0.
Make Human
A professional-grade free and open source software for creating 3D human (and humanoid) models.
Open Game Art
A website that offers free stock resources/assets for your game development process.
Red Blob Games
A blog from a game developer on game development. His posts usually include visual and interactive examples to aid his explanation which is really a nice way to discuss game dev concepts.
TIC-80 Computer
A virtual machine (or a fantasy computer, as they say) that specifically made for games and game development. Includes hardware-like restrictions, built-in tools for creating your games, and multiple language support such as Lua and JavaScript.
Personal comment:
I could've chose this featured list on awesome but for the spirit of free culture, I decided this pick the list by Calinou, instead.