Thievery is a free modification for Unreal Tournament. This modification changes UT into a whole new game, pitting a team of thieves against a team of guards in a pseudo-medieval setting.
Technical Features include:
 
 
New player physics:  
Three movement speeds: Creep, Walk, Run.  
Leaning round corners  
Mantling - pulling yourself up onto ledges  
Climbing ladders and ropes  
New maps:  
Thievery currently has 11 gorgeous maps, with more in production.  
Environments offer a high degree of interactivity, with objects to pick up and use, levers to pull and extensive use of dynamic light.  
Huge collection of custom textures  
Over 125 objects modelled for items and scenery, e.g. crates, food, candlesticks, loot, etc.  
New player models:  
Thief  
Guard  
New weapons and equipment:  
Bows and crossbows with a variety of special projectiles.  
Melee weapons - with continous collision detection as the weapons swing, meaning if you swing a mace into a wall, you'll see it smash against the wall, rather than just playing an animation on top of the view.  
Special items for the thieves and guards to use, e.g. flashbombs, caltrops, mines, flares, etc.  
New gametypes:  
Two game modes:  
Thieves vs Guards - the main game mode, where the team of thieves has to break into a well guarded location, steal the loot and escape, while avoiding the bloodthirsty guard team.  
Thiefmatch - still in early stages of development, but this gametype puts the thieves competing against one another to complete the objectives.  
Objectives - Thievery features a flexible objectives system where the mapper is free to script any objective he likes.  
Solo Play - the game modes can all be played singleplayer, with you taking the role of a lone thief against AI guards.  
Improved sound system:  
By default UT will play sounds right through walls, Thievery checks the flow of the sound through the level to decide if you can hear it or not.  
Thievery features a large collection of sound effects:  
Per surface sounds for footsteps, projectiles and other objects: Stone, metal, tile, wood, dirt, carpet, gravel, snow.  
Ambient sounds and music  
AI speech and player taunts  
Particle system:  
Thievery uses a particle system coded by c0mpile (of Irrational Games) used for a variety of effects: Splashes of water, fire, rain, snow, etc.  
Complex AI:  
Guards see things and hear noises, reacting as you'd expect.  
Fully mapper customisable in appearance, skill, equipment, orders, etc.  
Guard players can order AI guards in-game, getting them to guard key places, to patrol or follow.  
A number of voice sets, with over 150 samples in each one.  
Leaping, hissing spiders OF DEATH.  
Multiplayer:  
All the above are network ready, and the slower paced, sneaky gameplay is easily playable even on a 56k.