Game Development
In short: Game development is the development of computer and video games.
In more detail: It combines programming, graphics, sound, design and game mechanics.
In Depth
Tools
Engines: Unity (C#), Unreal (C++), Godot. 2D graphics with pixel art or HTML canvas. Models from Blender.
Concepts
Game loop, frames per second (FPS), collision detection, state machines, physics.
Browser games
Also possible with plain JavaScript (see programming browser games).
See also: Unity, Blender, FPS, Browserspiele programmieren