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Features: 

- shells and gibs have less gravity in water
- change lightning death message to "name accepts name's shaft"
- no on-screen awards 
- old lightning bolt graphic
- different shotgun smoke graphic (now follows the shotgun)
- new gib trails
- lightning bolt sparks
- crosshair player text shrink out
- crosshair changes color depending on health
- old rail rings readded (use cg_oldrail 1) (color1 and color2 still change color of the Rail)
- negative point plays a custom sound
- rotating chasecam when in menu or console
- new on-screen weapon position
- particle blood
- directional gibs
- 3D icons on hud for item pickup
- flashblend lighting. Replaces Q3 dynamic lighting (cg_flashblend turns it on and off. 1=on, 0=off)
- railgun colors show up on player model
- free rotating death cam
- sparks and smoke for bullets hitting walls/floors
- particle rocket/grenade trails
- particle explosions
- make the "you fragged" message smaller
- drowning bubbles
- noise for shells hitting the ground
- spinning gibs/shells
- real model head instead of skull for gibs (a la Quake1)
- several new death messages
- get rid of bobbing items