HALF LIFE

The debut title by Valve Software—took the PC gaming world by storm upon its 
release on November 19, 1998. Winning over 50 Game of the Year awards 
and selling more than eight million copies, Half-Life still reigns as 
the best-selling FPS of all time. An alternate version of the game 
called "Half-Life: Decay" was released for Playstation 2 on November 15,
2001 as well, offering different player characters and an all-new 
storyline.
Built off of a heavily modified version of the Quake engine,
Half-Life 
boasts much-improved graphics, artful ingame scripted sequences and one 
of the most immersive storylines of any game to date! Gameplay includes a
mix of intense action-oriented combat and various puzzles, all combined
in a continuous and immense world. 
This is port of half life, game working on quake engine.
Players find themselves in the shoes of Dr. Gordon Freeman, a 
theoretical physicist who inadvertently triggers the horrific incident 
known as the "resonance cascade" while performing an experiment, causing
massive destruction, death and an alien infestation of the entire Black
Mesa Research Facility. With a trusty crowbar (and a slew of other 
weaponry he finds on the way) and all the help he can get, Gordon finds 
himself pitted against both the aliens from the planet Xen and a 
dangerous military force known as the Hazardous Environment Combat 
Unit—who were dispatched to clean up the situation&mdashscientists 
included! Can he get out alive?

How to play?
1,Exract and copy data to sdcard where you want.
2,Install apk  
3,Open apk and select pak0.pak file which is the second folder of the data4,Enjoy game you can't find it on internet [possibly 10%]

Q-NEED ROOT?
ANS-NO

For download apk click Here 
For downlaod data click Here