AA member graywest has released a new homebrew game for the Atari 2600 called Quantum Tunnel.Instructions:
You're the blue particle on the left side of the screen. Your goal is to power up by collecting strings of like-colored particles.
Move the particle up and down with the joystick. Your particle has momentum and will not stop immediately when you release the stick. Learning to move accurately is key to high scores.
You begin with 3 lives. Avoid the nanobots - touching these will cost one life.
Touching the sides of the tunnel or obstacles will cause your particle to bounce around, potentially throwing you into something you don't want.
There are two types of collectible particles in the tunnel - yellow and green. You can collect either type, but you'll want to continue collecting particles of the same color in order to increase your bonus multiplier. For example, the first green particle is worth 0 points. If you collect another green particle next, you will receive 100 points, then 125 points for the next green particle, and so on, until you reach a maximum of 500 points per green particle.
The color of your score indicates the color of the last particle that you collected. If you have been collecting green particles, but you accidentally touch a yellow particle, you will receive 0 points and the bonus multiplier will reset.
Stop Time power: The status bar at the lower right indicates how much "Stop Time" power you currently have. Pressing the red button will freeze everything in the tunnel except for you. Use this ability to dodge nanobots, avoid tunnel obstacles, or position yourself to pick up particles.
When your bonus multiplier is at the maximum (after picking up 10 particles of the same color in a row) you will also receive a bonus to your "Stop Time" power meter.
The farther you advance in the game, the more difficult progress will become as more and more obstacles appear in the tunnel, and enemies speed up. Eventually, even your "Stop Time" power weakens and will only slow the enemies and particles rather than stopping them completely. Don't give up, though. Extra lives are awarded at 30K, 90K, 150K, and 300K.
The left difficulty switch, in the "B" position, gives you some "Stop Time" power to begin with. If this switch is in the "A" position, you begin the game with none and will have to earn it by capturing particles.