Gameplay

In single player, players explore and navigate to the exit of each level, facing many challenging monsters and a few secret areas along the way. Usually there are buttons to press or keys to collect in order to open doors before the exit can be reached. Once reaching the exit, the game takes the player to the next level.

Before the start level, there is a set of three pathways with easy, medium, and hard skill levels; in order to reach the Nightmare skill level (described in the game manual as "so bad that it was hidden, so people won't wander in by accident"), the player must drop through the water before the Episode 4 entrance and jump into a secret passage.

Quake's single-player campaign is organized into four individual episodes of about eight levels each (each including a secret level, one of which is a "low gravity" level—Ziggurat Vertigo in Episode 1, Dimension of the Doomed—that challenges the player's abilities in a different way). As items are collected, they are carried to the next level, each usually more challenging than the last. If the player dies, he must restart at the beginning of the level. However, games may be saved at any time.

Upon completing each episode, the player is returned to the hub Start level, where another episode can be entered. Each episode starts the player from scratch, without any previously collected items. Episode I (which formed the shareware or downloadable demo version of Quake) has the most traditional ideology of a boss in the last level. The ultimate objective at the end of an episode is to recover a magic rune. After all of the runes are collected, the floor of the Start opens up to reveal an entrance to the End level which contains the final boss, based on the god Shub-Niggurath from the Cthulhu Mythos.
Story

The player takes the role of an unnamed protagonist sent into a portal in order to stop an enemy code-named "Quake". Previously, the government had been experimenting with teleportation technology, and upon development of a working prototype called a "Slipgate", this enemy has compromised the human connection with their own teleportation system, using it to insert death squads into the "human" dimension, supposedly in order to test the martial capabilities of humanity.

The sole surviving protagonist in Operation Counterstrike is the player, who must advance, starting each of the four episodes from a human held but overrun military base, before fighting through into other dimensions, traversing these via slipgate or their otherworld equivalent. Once passing through each slipgate, the player's main objective is to survive and locate the exit which will take him to the next level, not unlike that of id Software's previous hit, Doom.
Credit : http://wikipedia.org
Play : http://www.kongregate.com/games/Lycius/quake-1
Download
Quake : http://www.4shared.com/file/29LXxwJo/Quake.htm
Quake II : http://www.4shared.com/file/3psq9EMU/Quake_2.html
(Copyright(c) 1996-1998 Credit : ID Software.)
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