2D isometric engine – Free
Open source, multilevel and multiplayer tilebased isometric engine
as3isolib – Free
As3isolib is an open-source ActionScript 3.0 Isometric Library developed to assist in creating isometrically projected content (such as games and graphics) targeted for the Flash player platform. As3isolib includes utilities, primitives and views. As3isolib was developed with simplicity, speed and performance in mind so that developers can focus on actual implementations rather than having to learn a complex API.
You can see latest project using this engine at http://apps.facebook.com/downtowngame/
FFilmation – Free
The FFilmation Engine is an AS3 isometric programing engine, focused mainly on game development. The aim of the project is providing a robust development platform, where game designers can work on the game’s details and forget about the render engine. It is intended to be really usable from a “real production scenario” point of view.
See a demo playing My Name is Poncho
Flash 3D Isometric Game Engine – Unreleased
Vector isometric engine allowing to zoom, rotate and pan the environment in a “real” 3D world. I’m asking the author more information, stay tuned
isoengineas3 – Free
2D Isometric Engine project build with Flash AS3. It is an open source, multilevel and multiplayer tilebased isometric engine. No more information.
Isometric Game Engine – Unreleased
An isometric engine built from scratch for an online virtual campus. No more info.
The demo is quite interesting so I am going to contact the author for more information.
Isometric terrain engine – Free
This is an isometric terrain generator, actually an abandoned project but still an inspiration.
source from http://www.emanueleferonato.com
Another great and pretty fast engine for 2D bitmap games.
“TheoSDK is a kit based on our original Theo Isometric Engineâ„˘ and it lets you create your own map-based games fast.”
Source: Isometric Game Engines
OpenSpace – ISO engine
3D engines (related)