Added over 20 new units,such as: Shock troopers, Demo.Truck, Centurions, Cyborg Reapers, Cyborg Terminators, and Volkov of Dark.
You can build controlable weapons, such as Hunter Seeker and Multi-Missile.
More weapons added, like the Nuke.
New Super Weapons.
Laser Soldier is now Nod's.
New Naval Yard and Subpen.
New Paratroopers and Parabombs.
New Infantry Catapult and Infantry Bomber(They throw and drop infantries as a weapon).
New Hover Infantries.
New Subterrainean Infantries.
New Water Bound Infantries.
Added new Naval units.
Added new Submarines Units.
Tesla Tanks use new weapon.
New Tiberiums(Red and Yellow).
Added Chrono Units.
Mutant Combatant is now GDI's.
Hover Destroyer(Hover MLRS) can detech subs now.
Sandbags added.
New Mobile Barracks and War Factorys.
The requirement of GDI Kodiak and Nod Montauk was changed.
Amphibious Light Tank is now named as Newt.
Advanced Mammoth Tanks are now tougher.
Terminator and Terminator Commando were renamed and had given to Nod.
The Ion Cannon Communicator, Multi-Missile Launcher and Chemical Missile Vehicle is much expensive then before,but their tech levels are lower.
Cyborg Commandos now require a Citadel of Nod, cost $2500 but are very powerful.
Mobile Stealth Generator has a better area now.
Theme.ini was added to enable the secret music.

How to use Naval Units:

First, build a Naval Yard or Subpen.
Second, Build a Gunboat Transformer, Cruiser Transformer, Submarine Transformer or Missile Sub Transformer(They can build in War Factorys).
Third, select the Transformer.
Fourth, move it to the water.
Fifth, press "D" button on your keyboard.
Lastly, find a place on the water and left click, then they transform to Naval Units.

Find the other changes by yourself because I can't remember all . . . 

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Chagnes in the Previous Versions(1.0-1.04):

Over 80 new units added.
Secret units/buildings enable, such as the GDI Kodiak and Umagon.
Some original units/buildings are now available for the both sides.
Old units in C&C1 and Red Alert are added.
More then 10 new building added.
New super weapon.
Super final weapons added for the both sides.
New units fire special weapons in game, such as the Ion Cannon Communicator and the Multi-Missile Launcher.
New weapon systems.
New projectile systems.
New warhead systems.
A new, cool title screen.
Hidden music enable.
Up to 500 units can be queued up at a time!
Aircraft now reload their weapon much faster.
Many original units are modified to balance the game.
Random Ion Storms and Meteor Storms.
Cyborg will go berserk when they are nearly death.
You can have more special units at a time, such as the Mammoth Mk.II and the Cyborg Commandos.
Your elite units will become much stronger then before,and most of them got a new weapon when they are veteran.
Damage/Range/Rate of fire of some original weapons are changed.
Properties of special weapons are changed.
New lighting effect.
Improved AI system.
The Cyborg Commando will really use a Fireball Launcher when fighting infantry units, just as what is told in the manual.
...and many more changes!