Open Source Sprite Kit Engine

Download Kobold Kit v7.0.5

Tilemaps

Super-Fast Renderer
TMX Read & Write

Behaviors

Plug-In Code for Nodes
Many Built-In Behaviors

Audio Engine

ObjectAL: OpenAL & AVAudio
"Simple Audio" Interface

Lua Scripting

Lua 5.2 built-in

Physics Debug Drawing

... and other cool stuff SK is missing.

Targets

Runs on iOS & OS X