Apple ][ - Castle Wolfenstein & Beyond Castle Wolfenstein

In the History of video games, Castle Wolfenstein and Beyond Castle Wolfenstein, marked the first time I remember of a computer making somewhat analog voices. We used to play the games on the Apple II, and the shouting of the guards over those apple speakers was something else. In the first game, Castle Wolfenstein, you were to escape from the Nazi prison, Castle Wolfenstein. In the second game, Beyond Castle Wolfenstein, you were to infiltrate the Fuehrer's underground bunker, find a hidden briefcase bomb, find the secret conference room, set the timer, and escape! You have to use security passes, bribes, gunfights, elevators, alarm tool-kits, and your memory (to remember your way out). All of which make for an exciting game on the first personal computer, the Apple ][!

Ihre papiere, bitte!

Ding! 40!

It happened!  I have chalked up 40 trips around the Sun.
It's been interesting so far!
It will be exciting to see what lies ahead.

Atari 2600 - Missile Command

Early arcade games had different genres of input methods (such as: buttons, paddles, steering wheels, joysticks, pedals). The arcade version of Missile Command used a giant trackball to move around your cursor, which would direct and range the flak cannon anti-ballistic missiles. In the game Missile Command, the player commanded a battery of defensive missiles. The player directed the launch of a limited set of defensive missiles against incoming ballistic missiles (raining down from above), hoping to save their six protected cities. The game was intense, as the pace quickened, defenses were limited, and the number of incoming missiles increased. On occasion, the would be cruise missiles, which may sidestep your defensive missile's explosion, and could only be stopped by a direct hit. The Atari 2600 version didn't have the giant trackball, but it did have a frenetic pace!

Launch defensive missiles!

Apple ][GS - Your Tour of the Apple IIGS

One of the first mouse based games that I got to experience was the very appropriately titled, Your Tour of the Apple IIGS. This introduction/game was designed to usher the user into the era of graphical based computing. The tour was essentially and introduction to using the computer mouse. The early Apple mice had a single button (until eons later, when Apple went with non-mechanical touch pads, and eventually decided multi-touch was the future).
Your Tour of the Apple IIGS was not much of a game, but it was an experience using the mouse to interact with the computer. Analog input had come a long was from the paddles of the Apple ][, and the Apple ADB mouse was a well designed peripheral.

Atari 2600 - Bezerk

Battle against the robots in some distant future! Bezerk, for the Atari 2600 was a bit of a nightmare scenario, where the player is stuck in a maze battling robots, and being chased by an invincible bouncing smiley face robot.
There were different versions of the robots. There were apparently different versions of the game, with different versions of the robots. The game version we had only had four types of robots:

1. Malicious
2. Malicious and armed with some type of gun
3. Malicious and armed with two guns 
4. Bouncing and invincible 

Oh, and lest I forget, the walls of the maze were electrified. Our hero could only shoot one bullet at a time, so if he missed, he might not have another chance. Yikes!

One of the more memorable aspects of Bezerk was the stark and intense sounds effects of the game.  

Atari 2600 - Pitfall!

Pitfall! The game that took Atari's everywhere by storm. The must have console game of  1982! Pitfall was a one player game that had you tromp-sing through the jungle, finding gold bars and swinging from vines. You could match your reflexes against snakes, crocodiles, scorpions, logs, tar, and quicksand. With subterranean caves and underground brick walls. And a race against time, no less. All in the quest for the Inca gold/high score! Pitfall is the ancient prototype of the side scrolling adventure genre (albeit in a side-panning method).

Actual gameplay may or may not feature rainbows.

One of the most memorable aspects of Pitfall! was the monophonic Tarzan yodel while swinging on the vine.

Atari 2600 - Combat

Possibly my favorite game for the Atari 2600 was Combat.  A two player competitive game.  You could compete against you component with tanks. There were more options as well, such as: tanks with barricades, tanks with more barricades, tanks with bouncing bullets, invisible tanks, biplanes with clouds, biplanes without clouds, bomber and planes, jets with clouds, etc.
Eons later, the Nintendo Wii had a remix of the concept with tank combat on Wii Play, albeit with much better graphics and controls.

One of the best parts of the Atari games were their picturesque manuals. The graphics were so rudimentary, the game left much to the imagination. And the manuals and comic stoked the fires of the mind!