Free crate game engine milestone 4.1 software for linux

Siriel4 game engine project is a game engine for adventure, arcade, maze-like games.
The main goal of this engine is to provide tools and scripts for easy game creation.
Game creators only write the necessary scenario descriptions for the game in a scripting language (such as Lua) and do not have to care about such low-level details as animation loading, etc.
Main features:
- Lua-5.0 - scripting language support
- DUMB - music and audio support
- Multiplayer
- Terminal support for controlling engine
Enhancements:
- fixed widget system
- removed procedure for separate processing of widget and replaced by flag indicating status of widget
- basic support of room neighbours
- fixed Makefile - include paths
- fixed freeze mode of univers (bug: avatar can move in freeze mode)
- callback function
- avatar can walk through rooms
- fixed processing and displaying things in correct rooms, so they display only in rooms where they are connected to
- fixed collision with object

Eclipse is a set of C++ classes designed to give beginner developers a head start in developing their first games as well as more experienced developers who dont want to have to write code for mundane tasks like fonts, sprites, and image loading.

Eclipse 2D Game Engine provides bitmap fonts, window management, audio capabilities, image loading, error logging, and zip file support.

Lucidity hopes to become the next generation graphical user interface focused on speed and usability.
Lucidity is being developed in Ruby and at this point Im the only developer. Although not much information is given on this site (right now, that is) I have a pretty good idea of where Im aiming towards with this interface.
Enhancements:
- This is a (testing only) local chat application that allows two or more instances of a chat application to communicate with each other.

Sphere RPG Engine project is a role-playing game creation engine.

Sphere is a RPGCE (a role-playing game (RPG) creation engine) that allows you to relatively easily put together an RPG along the lines of Final Fantasy 6 or Phantasy Star.

It supports 32-bit graphics (with 256 levels of translucency) and MP3, Ogg, MOD, S3M, IT, and XM files for audio (and WAV and SPX (speex) for sound effects), and does not place arbitrary limits on map, tile set, sprite set, or script sizes.

It also supports the three standard modes of input for games: keyboard, mouse, and joystick.

Sphere uses SpiderMonkey (Mozillas JavaScript implementation) for scripting. JavaScript is a very powerful, easy, and flexible language.

The core Sphere engine, after being installed, can run several games. This means that the games dont have to be distributed with the engine, saving download time and disk space. Also, the games can be run on other operating systems, such as Linux, if the engine runs there. On the other hand, you can include the Sphere engine with your game so that Windows users can run your game out of the box.

The Sphere engine is based around maps. Maps use tilesets, which are collections of tiles. A map of a beach would have tiles that represent the sand, the water, clouds, signs, and anything else on the beach. Sphere has support for animated tiles.

Torches could flicker in a cave, or waves could lap at the shore. Maps support unlimited layers, each with parallax and automatic scrolling.

Objects in Sphere are represented as entities. Townspeople are defined with spritesets, which are collections of frames. People can walk in eight directions, and have special directions (usually used for emotions or running). Unlike most RPG engines, spritesets in Sphere have a variable size. Large animal spritesets are used just as easily as people.

Drome Engine is a 3D game engine thats written in C++ and uses OpenGL for graphics rendering. Its currently under constant development; the main focus at this time is to improve and stabilize the application programming interface (API).

UFO: Alien Invasion is a 3D UFO-inspired tactical game.
UFO: ALIEN INVASION is a strategy game featuring tactical combat against hostile alien forces which are about to infiltrate earth at this very moment. You are in command of a small special unit which has been founded to face the alien strike force.
To be successful on the long run, you will also have to have a research team study the aliens and their technologies in order to learn as much as possible about their technology, their goals and the aliens themselves.
UFO: Alien Invasion is heavily inspired by the X-COM series by Mythos and Microprose. The first game of the series, UFO DEFENSE, became a classic and, in our honest opinion, is one of the best games ever made.
UFO: Alien Invasion is neither a sequel nor a remake of UFO DEFENSE - we simply had the urge to create a similar strategy game, which will hopefully be as entertaining as the original was for the players (and for the developers, of course). Join the IRC-Channel at irc.freenode.org named #ufo:ai and contribute to the developing process.
Gameplay:
The game is turn-based. Well, this might sound somewhat old school now, but trust us: turn-based games are fun!
Each member of your squad has a limited number so called "time units" each round, which are consumed when you order the unit to walk, to fire a weapon or to perform any of the other miscellaneous actions. When all your forces are out of time units, the aliens turn starts. In addition to eliminating as many enemies as possible, your mission is to minimize civilian casualties as well as to acquire parts of the advanced alien technology.
Once youve acquired sufficient samples of the unknown technology, your research labs will be able to reproduce the alien weapons and devices in order to use them against their original creators.
Game Engine:
The game engine is based on a heavily modified version of IDs Quake2 Engine. This doesnt imply that UFO: Alien Invasion is a mod or a total conversion at all! No, UFO: AI is a stand-alone game which doesnt require Quake2 or any similar program to run. Our self-developed game engine is featuring up-to-date OpenGL graphics and special effects, increased texture resolution, hardware accelerated clipping of map layers to toggle between floors, a new animation system for player models, a stunning AI and a few other gimmicks.
Multiplayer support:
You can play UFO: ALIEN INVASION with your friends via LAN or Internet. One player takes the role of the human special squad while the other is in control of the alien invaders. Co-op team play with multiple players on both sides is also supported for up to three teams on each side (6 players total).
Enhancements:
- Implemented sv_roundtimelimit cvar to set the maximum time a team has to finish their round in multiplayer.
- Completely rewritten saving and loading system.
- Finished implementation of Flashbang - now Flashbang will disable enemys reactionfire as well.
- Reintroduced employees renaming again.
- Hire menu and Team Select menu now shows Health bar as well.
- Heavily improved chat subsystem for multiplayer as well as Multiplayer Team Selection menu.
- Improved describing weapons and ammo in UFOpedia and other menus, including displaying firemodes.
- Added multiplayer server password protection.

Fuzz Engine is an SDL/Mono-based 2D game engine that loads its games from XML so that anyone with a simple text editor can produce their own high-performance games in minutes.

Known problems: the platform game system is still pretty flaky.