ZX81 Programs

Read about, play, run, or list games, animations, and more. These are my programs from the ’80s to today.
**1985**SLR/1985*******
**1985**SLR/1985*******
Hit any key to clear the land, but don’t clear too much!
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**3D IMAGE**SLR/1984***
**3D IMAGE**SLR/1984***
A ZX81 animation experiment using a super nova as its subject.
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**A STORY**SLR/1983****
**A STORY**SLR/1983****
Use the ZX81 to create a story.
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Asteroid £ Metor
Asteroid £ Metor
Shoot the asteroids that are flying at you using the numbered arrow keys.
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**BAR GRAPH**SLR/1984**
**BAR GRAPH**SLR/1984**
A simple bar chart creator. Just enter data for each graph. You can add a description and title as well. Once done, review or print the graph.
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****BEO ONE****SLR/1984
****BEO ONE****SLR/1984
A talking head! Feed it some words, and watch Beo speak them!
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**BLAST OFF**SLR/1985**
**BLAST OFF**SLR/1985**
Type the sequence of letters in time to launch on time.
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**BLASTER**SLR/1985****
**BLASTER**SLR/1985****
Shoot the bomber as fast as you can before it can complete its mission. But beware, its shields can deflect your missiles.

Use Z to move left, . to move right, and M to fire.

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*BLOCK £ SPEAR*SLR/1984
*BLOCK £ SPEAR*SLR/1984
Don't get run through with the other Knight's lance! Use
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**BOLT**SLR/1984*******
**BOLT**SLR/1984*******
Simple graphic program of a lightning bolt, should just run!
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**BONKERS**SLR/1985****
**BONKERS**SLR/1985****
Avoid the O's to win the game! Use cursor keys to move.
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*BONKERS*SLR/1985/2012*
*BONKERS*SLR/1985/2012*
Avoid the O's to win the game! Use cursor keys to move.
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**BUGERS**SLR/1985*****
**BUGERS**SLR/1985*****
Use Z (left), X (right), and M (up) to block attacks.
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**CAN PUNCH**SLR/1984**
**CAN PUNCH**SLR/1984**
Use Z (up) and . (down) to punch the can.
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*CANYON RAIDER*SLR/1983
*CANYON RAIDER*SLR/1983
Steer your ship with 'Z' and 'X' to avoid objects or capture fuel. Use 'M' to break things.
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**CAVE WAR**SLR/1985***
**CAVE WAR**SLR/1985***
Use “Z” and “.” to move left and right. Use “X” to destroy blocks.
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*CODE IV*SLR/1985,2017*
*CODE IV*SLR/1985,2017*
Your help is needed to crack into the computer and disable the floor grid.
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**COMP. TALK**SLR/1983*
**COMP. TALK**SLR/1983*
Introduction to the ZX81.
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**COMPUTACT**SLR/1984**
**COMPUTACT**SLR/1984**
Run the trench using the 5 and 8 keys and land your ship to destroy the COMPUTACT.
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**CREATURE**SLR/1985***
**CREATURE**SLR/1985***
Watch the Dungeon Master deflect your attempts to defeat him.
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**DEATH MAZE*SLR/1984**
**DEATH MAZE*SLR/1984**
Can you escape from the clutches of the monster Beo by making your way through its Death Maze?
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**DICE GAME**SLR/1983**
**DICE GAME**SLR/1983**
A simple high/low dice game.
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*DIGITAL RAIN*SLR/2018*
*DIGITAL RAIN*SLR/2018*
My version of digital rain. Random numbers, letters and symbols fall from the top of the screen.
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**DOLLAR SIGN**SLR/1984
**DOLLAR SIGN**SLR/1984
Quickly get to the goal without hitting a bomb using the 5-8 arrow keys.
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**DRAGONS LAIR SLR/1985
**DRAGONS LAIR SLR/1985
My version of the classic arcade game. Use 'Z' for left, 'X' for right, 'M' for up and '.' for down.
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**E.T.**SLR/1985*******
**E.T.**SLR/1985*******
Help E.T. the extra terrestrial get home safely!
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**E.T.**SLR/1985-2012**
**E.T.**SLR/1985-2012**
E.T. Machine Code version, use A for up, Z for down, N for left, and M for right.
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**ELECTON****SLR/1983**
**ELECTON****SLR/1983**
Try to capture the erratic Electon in your light field using Z for up, X for down, N for left and M for right.
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**ENLARGER**SLR/1984***
**ENLARGER**SLR/1984***
Program that enlargers a moon in multiple frames.
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**ENLARGER+**SLR/1984**
**ENLARGER+**SLR/1984**
An updated version that saves the frames and displays in real time.
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**FALLER**SLR/1984*****
**FALLER**SLR/1984*****
Avoid the creepy crawlies or you might fall! Use Z and . to move, M to stop the creepers.
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**FIREBALL**SLR/1984***
**FIREBALL**SLR/1984***
Dodge the fireballs using 'Z' for down and '.' for up.
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**FLY**SLR/1984********
**FLY**SLR/1984********
Use Z and . to move, and M to get the fly.
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**FLYWHEEL**SLR/1985***
**FLYWHEEL**SLR/1985***
Avoid oncoming cars in this night time driving game.
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**GOLF**SLR/1983*******
**GOLF**SLR/1983*******
Play 18 holes of golf in this simple graphic/physics game.
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**HIT MAN**SLR/1983****
**HIT MAN**SLR/1983****
Dodge the walls using Z (left) and . (right).
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INPUT ONE**SLR/1984
INPUT ONE**SLR/1984
A simple input demonstration.
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Input Two*SLR/1984
Input Two*SLR/1984
Enter ten words and be amazed.
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**JET FLYER**SLR/1984**
**JET FLYER**SLR/1984**
Use Z (left) and . (right) to stay on course (closest to 0) and not crash.
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**JOUST**SLR/1984******
**JOUST**SLR/1984******
Another classic arcade game! Look out for the hand!
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**LANDER 2**SLR/1983***
**LANDER 2**SLR/1983***
Land your ship in as few moves and as much as possible.
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****LANDER****SLR/1984
****LANDER****SLR/1984
Can you land your ship without crashing? Use 5 and 8 to steer left and right.
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**LASER BLAST**SLR/1984
**LASER BLAST**SLR/1984
Save the world by firing your laser with
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**LIGHT WALLS**SLR/1983
**LIGHT WALLS**SLR/1983
Use Z (left) and . (right) to avoid the walls.
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**LOCK £ FIRE**SLR/1985
**LOCK £ FIRE**SLR/1985
Lock on and kill the aliens before they kill you! Use ZXM. (left, up, down, right) to move, L to lock, then F to fire.
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**MATH BASH*SLR/1984**
**MATH BASH*SLR/1984**
Solve math problems to save the planet from the aliens.
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**MAZE CRAZE**SLR/1984*
**MAZE CRAZE**SLR/1984*
A twisty, turvy 3D maze game!
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MISSILE DEFENSE*SLR1983
MISSILE DEFENSE*SLR1983
How long can you last against the missile onslaught? Use Z to move right, X to move left, and . to fire.
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**MONKEY MAZE**SLR/1993
**MONKEY MAZE**SLR/1993
Use the cursor keys (5, 6, 7, 8) to dodge the barrels and save the princess.
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MONSTER MAKER*SLR/1983
MONSTER MAKER*SLR/1983
Enter 5 numbers and a name and your results are ready for printing.
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**NA**SLR/1985******
**NA**SLR/1985******
Use the N and A key's to defeat the NA runner, if you can!
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**ODYSSEY**SLR/1984****
**ODYSSEY**SLR/1984****
To move use Z (left) and . (right); use M to remove memory card.
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*PAC-MAN VIDEO*SLR/1983
*PAC-MAN VIDEO*SLR/1983
Random fun, no skill required.
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**PAC-MAN**SLR/1983****
**PAC-MAN**SLR/1983****
Choose number of dots to eat without getting eaten.
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**PARACHUTE**SLR/1985
**PARACHUTE**SLR/1985
Can you parachute to safety? Press any key to jump.
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**PHOTON**SLR/1985
**PHOTON**SLR/1985
A fiery photon torpedo being shot at an enemy vessel.
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**PHOTON**SLR/1985/98**
**PHOTON**SLR/1985/98**
Updated/cleaned version of Photon.
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*POLE DODGE 2*SLR/2012*
*POLE DODGE 2*SLR/2012*
How high can you score flying around the incoming poles.
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**POLE DODGE**SLR/1984*
**POLE DODGE**SLR/1984*
Use Z (left) and . (right) to dodge the incoming poles.
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**PYLON V**SLR/1984****
**PYLON V**SLR/1984****
Maneuver through the pylons, capturing the bonus points within. But, be careful not to hit the pillars.

Use Z to move left, . to move right.
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**RACEWAY**SLR/1983****
**RACEWAY**SLR/1983****
Stay in the raceway or you’ll crash. Use Z and . to steer left and right.
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**RAIDER V*SLR/1984****
**RAIDER V*SLR/1984****
Avoid the enemies using 'Z' for left and '.' for right.
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**RMS**SLR/1983********
**RMS**SLR/1983********
Randomly generate some basic monster statistics for adventure games.
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*ROAD HOG ML**SLR/2012*
*ROAD HOG ML**SLR/2012*
Machine Language version of Road Hog. Use Z (left) and . (right) to dodge the incoming cars.
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**ROAD HOG**SLR/1983***
**ROAD HOG**SLR/1983***
Use Z (left) and . (right) to dodge the incoming cars.
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**RUNNER**SLR/1986*****
**RUNNER**SLR/1986*****
Last game I wrote on my ZX81.
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**S.M.P.******SLR/1984*
**S.M.P.******SLR/1984*
Use NEWLINE for a space and RIGHT ARROW (shift-8) to scroll.
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**SLOW DOWN**SLR/1985**
**SLOW DOWN**SLR/1985**
Two versions of a transformation animation: fast, and slowed down.
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SNUNCH ML*SLR 1983/2013
SNUNCH ML*SLR 1983/2013
Updated SNUNCH! Avoid the ghost and exploding pills. Use A for up, Z for down, N for left, and M for right.
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**SNUNCH**SLR/1983**
**SNUNCH**SLR/1983**
A Pac-Man type clone, sort of!
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**SPACE DOCK**SLR/1984*
**SPACE DOCK**SLR/1984*
Watch the shuttle head to space for docking.
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SPACE LANDER 2011
SPACE LANDER 2011
Steer your space lander on the pad without crashing, rewritten version of Space Lander with some fun added.
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*SPACE LANDER*SLR/1983*
*SPACE LANDER*SLR/1983*
Move the lander and hope to find the best landing site!
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**SPHERE**SLR/1984*****
**SPHERE**SLR/1984*****
A simple graphic program that plots a sphere. Runs in FAST mode, press any key to pause and show progress.
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*SPIDERS£FLIES*SLR/1985
*SPIDERS£FLIES*SLR/1985
You are a young Venus Flytrap trying to survive. Use the arrow keys (5, 6, 7, 8) to move.
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**STAR DODGE*SLR/1984**
**STAR DODGE*SLR/1984**
Use “Z” and “.” to dodge the stars!
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STAR FIGHT/SLR 1983
STAR FIGHT/SLR 1983
Prevent the Star Fighter from getting past your sights! A very simple shoot ’em up game. Move the fighter into your sights using the M and N keys. Use F to fire.
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**STAR PROBE**SLR/1984*
**STAR PROBE**SLR/1984*
Lost in space without memory, can you figure out your controls before something bad happens?
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**STAR WARS**SLR/2017**
**STAR WARS**SLR/2017**
A short animation using a sketch from 1983.
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**STICK SHIFT**SLR/1985
**STICK SHIFT**SLR/1985
Use arrow keys to turn (5, 8) and shift (6, 7) to dodge the dangers of the road.
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**STUD**SLR/1984*******
**STUD**SLR/1984*******
A simple betting hi/low card game.
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*SUGAR CUBE MUNCH*SLR83
*SUGAR CUBE MUNCH*SLR83
Simple movement game, clear the board as fast as possible! Use arrow keys (5, 6, 7, 8) to move.
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**T.W.M.**SLR/1985*****
**T.W.M.**SLR/1985*****
Tactical War Machine, a simple animation using BASIC.
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**TABULAR**SLR/1983****
**TABULAR**SLR/1983****
A word processor for the ZX81 that prints lowercase letters to the printer!
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**TARANTULA**SLR/1984**
**TARANTULA**SLR/1984**
Avoid the tarantula’s by jumping over them using . and move to the other side using Z. But, be careful not to hit your head.
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**TELAPORT**SLR/1984**
**TELAPORT**SLR/1984**
Use the arrow keys (5, 6, 7, 8) to grab cubes, avoid monsters and jump into the teleport to escape.
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**THE BALL**SLR/1983**
**THE BALL**SLR/1983**
A bouncing ball animation.
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**THE BALL**SLR/1983/2012/2014**
**THE BALL**SLR/1983/2012/2014**
A bouncing ball animation. Use “Q” to quite between BASIC and Machine Code version. In MC version, use “6” and “7” to speed up or slow down the animation.
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*THE HAUNTING**SLR/1985
*THE HAUNTING**SLR/1985
Weird ZX81 music
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****THE MONSTER****
****THE MONSTER****
Your ship is sinking. Can you land it in the seaweed without crashing on the rocks? Use the arrows keys to move.
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*THE PICTURE**SLR/1984*
*THE PICTURE**SLR/1984*
Watch the ZX81 draw a picture.
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**THYIME**SLR/1984*****
**THYIME**SLR/1984*****
Use Z (left), . (right), and X (fire) to save the worlds.
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*TIC-TAC-TOE**SLR/1983*
*TIC-TAC-TOE**SLR/1983*
A simple tic-tac-toe game. Just enter the number for where you want to move.
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**TILES**SLR/2013****
Prototype tile adventure game.
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**TIME**SLR/1985*******
**TIME**SLR/1985*******
Using the Z and . keys, you maneuver your craft to each successive landing pad.
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*TOWER OF LOVE*SLR/1984
*TOWER OF LOVE*SLR/1984
Introduction to an unfinished adventure game.
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**TRAIL BLAZER*SLR/1984
**TRAIL BLAZER*SLR/1984
Run the enemy into your trail using arrow keys. Be careful not to crash yourself.
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**TUNNEL DODGE*SLR/1985
**TUNNEL DODGE*SLR/1985
Quickly avoid the obstacles using "Z" for left, "." for right, "X" for down, and "M" for up.
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**UP-CAKE**SLR/1985****
**UP-CAKE**SLR/1985****
Use “Z” and “.” to eat the cakes, but watch out for the burnt ones!
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V WATER BATTLE*SLR/1984
V WATER BATTLE*SLR/1984
Save the water! Use “Z” and “.” to move, M to fire.
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**VARGEN CROWN*SLR/1984
**VARGEN CROWN*SLR/1984
Find the key to the castle.
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**WATER BUG DEMO**
**WATER BUG DEMO**
The title screen demo for Water Bug II.
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**WATER BUG II*SLR/1984
**WATER BUG II*SLR/1984
Try to grab the treasure again!
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**WATER BUG**SLR/1984**
**WATER BUG**SLR/1984**
Grab the treasure while avoiding the obstacles!
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**WINDMILL**SLR/1985***
**WINDMILL**SLR/1985***
A simple windmill simulation. Choose the speed and
duration of the animation.
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**WIZERDRY**SLR/1983***
**WIZERDRY**SLR/1983***
A boiling cauldron and bottle smoke up some words.
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**ZTSXXSTZ*SLR/1984
**ZTSXXSTZ*SLR/1984
A space shooter. Use ASDZ keys to move (inverted axis). Use . to fire. Watch out! They fire back.
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*** ZX MASTER MIND ***
*** ZX MASTER MIND ***
Guess the right 3 numbers, including order.
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