# Godot > Wiki for the Godot game engine (4.x): nodes & scenes, instancing, signals, GDScript and C#, the node lifecycle, input, 2D/3D, physics, animation, UI/Control nodes, exporting, and best practices. > Covers: Godot 4.x: engine overview & key concepts, nodes/scenes/scene-tree, instancing, signals, GDScript (and C#/scripting languages), the node lifecycle (_ready/_process/_physics_process, pausing), input handling & the Input Map, working in 2D and 3D, physics & collision (bodies/areas/layers), animation (AnimationPlayer/Tween), UI Control nodes & containers, exporting to platforms, and architecture best practices. > Not covered: The full class/API reference (use the in-editor help or docs.godotengine.org), shaders/navigation/multiplayer/XR/audio deep-dives, step-by-step game tutorials, and Godot 3.x API differences. > Current as of: 2026-06-19 - [LLM Wiki](/raw/godot/README.md) - [Knowledge Base Index](/raw/godot/wiki/index.md) - [Animation](/raw/godot/wiki/concepts/animation.md) - [Exporting Games](/raw/godot/wiki/concepts/exporting.md) - [GDScript](/raw/godot/wiki/concepts/gdscript.md) - [Input Handling](/raw/godot/wiki/concepts/input.md) - [Instancing](/raw/godot/wiki/concepts/instancing.md) - [Nodes & Scenes](/raw/godot/wiki/concepts/nodes-and-scenes.md) - [Physics & Collision](/raw/godot/wiki/concepts/physics.md) - [Scripting & the Node Lifecycle](/raw/godot/wiki/concepts/scripting-and-lifecycle.md) - [Scripting Languages & C#](/raw/godot/wiki/concepts/scripting-languages-and-csharp.md) - [Signals](/raw/godot/wiki/concepts/signals.md) - [UI (Control Nodes)](/raw/godot/wiki/concepts/ui.md) - [What is Godot](/raw/godot/wiki/concepts/what-is-godot.md) - [Working in 2D](/raw/godot/wiki/concepts/working-in-2d.md) - [Working in 3D](/raw/godot/wiki/concepts/working-in-3d.md) - [Activity Log](/raw/godot/wiki/log.md) - [Docs Catalog](/raw/godot/wiki/summaries/docs-catalog.md) - [Best Practices & Building a Game](/raw/godot/wiki/syntheses/best-practices-and-building-a-game.md)