"Castle Game Engine" ( https://castle-engine.sourceforge.io/ ) is an open-source 3D and 2D game engine.

We have many graphic features (shadows, mirrors, screen effects...) and support many data formats for game assets (X3D, VRML, Collada, Spine...). We have a nice scene manager, with many optional components (like instant creatures with simple walking and attacking intelligence). We're cross-platform (desktop, mobile, web browser plugin).

See https://castle-engine.sourceforge.io/features.php for the complete list of engine features.

Documentation:

• The "Getting Started" page on https://castle-engine.sourceforge.io/documentation.php describes what to install and how to compile. See also the section below.

• Manual: See https://castle-engine.sourceforge.io/manual_intro.php .

• API reference: Online on https://castle-engine.sourceforge.io/apidoc/html/index.html . Offline in doc/reference/ subdirectory of the engine archive (if you downloaded the zip or tar.gz engine release), just open the file doc/reference/index.html in your WWW browser.

• Numerous examples are provided in the examples/ subdirectory. For example take a look at a simple FPS game example in the examples/fps_game/ subdirectory.

• Guide to creating game data: https://castle-engine.sourceforge.io/creating_data_intro.php

Questions? Ask on our forum: https://castle-engine.sourceforge.io/forum.php .

Support us on http://patreon.com/castleengine .

Get Lazarus ( http://www.lazarus.freepascal.org/ ) and install in Lazarus two packages:

• packages/castle_base.lpk and
• packages/castle_components.lpk Also, compile (but don't install) this package:
• packages/castle_window.lpk Then you can compile all the examples by opening their .lpi files and running them as usual from Lazarus.

If you use bare FPC and the command-line, you can:

• Use xxx_compile.sh scripts to compile particular programs using FPC. Use "make examples" in the top engine directory to simply compile all the examples.

• Use the build tool to compile various examples and your own games for many plaforms: https://github.com/castle-engine/castle-engine/wiki/Build-Tool

See the "Getting Started" page on https://castle-engine.sourceforge.io/documentation.php for more information.

The engine is available on the terms of LGPL >= 2 license with "static linking exception". This is the same license as used by FPC RTL and Lazarus LCL. In short, you can make commercial and closed-source games using the engine, you only have to share your modifications to the engine core. See COPYING.txt for details.

Have fun!

Michalis Kamburelis