A downloadable game for Windows and Linux

APOLLO-26 — FLIGHT COMPUTER

You came aboard to repair a flight computer. Then it started noticing you.

APOLLO-26 is a retro science-fiction programming puzzle game inspired by the spirit of classic engineering and Zachtronics-style problem solving.

You are the engineer assigned to recover a damaged spacecraft one system at a time.

At first, the work seems simple.

Load a value. Correct a signal. Restore a circuit. Send the result to Node 2 for verification.

But APOLLO-26 is still running.

And something inside the machine is paying attention.

PROGRAM THE MACHINE

Write programs using APOLLO-26 Assembly, a compact assembly-inspired language built specifically for the game.

Work with:

MOV, ADD, SUB, MUL, DIV Live system inputs with IN Transmissions with OUT Comparisons using CMP Conditional branches with JZ, JL, and JG Unconditional jumps with JMP Your own programmer-defined labels

You do not need previous assembly-language experience.

The Demo begins with simple operations and gradually introduces branching, live inputs, comparisons, multiple system states, and more complex engineering logic.

NODE 1 CALCULATES. NODE 2 VERIFIES.

Your program runs inside Node 1.

Node 2 independently verifies the result.

Getting the correct number is not always enough.

Later systems may test your program against readings you have never seen before, forcing you to build logic that actually solves the engineering problem instead of hard-coding the answer.

There may be more than one valid way to reach the correct result.

THE DEMO

The APOLLO-26 Demo contains:

• 20 campaign problems • A complete opening chapter of the APOLLO-26 story • 10 optional Engineering Practice Exercises • Arithmetic, live inputs, comparisons, branching and labels • A separate Practice Terminal for learning without affecting campaign progress • Mission Archive and recovered system information • Contextual hints and Label Assist • A printable Engineering Workbook for players who like solving problems with pen and paper • An English Operations & Programming Reference • A Serbian-language manual

A thoughtful first playthrough will typically take around 4–7 hours, depending on programming experience and how much you experiment with your solutions.

Experienced programming-puzzle players may move considerably faster, while newcomers who take time to learn the system and complete the Practice Exercises may spend much longer.

THINK LIKE AN ENGINEER

APOLLO-26 is not about typing code as quickly as possible.

Read the Mission Data. Understand the system. Plan the logic. Write the program. Run it. Watch the CPU. Find the mistake. Try again.

And eventually:

MATCH.

SOMETHING IS STILL RUNNING

The deeper you move into the spacecraft, the less this feels like an ordinary recovery operation.

Old systems begin revealing fragments of a larger story.

Node 2 behaves in ways it was never supposed to.

And the question slowly changes from:

Can you repair APOLLO-26?

to:

Why was it waiting for someone to repair it?

DEMO STATUS

This Demo contains the first 20 problems of the planned full 101-problem APOLLO-26 campaign.

Version 1.0 will continue the story beyond the Demo and expand the engineering systems, puzzles, spacecraft recovery, and the mystery surrounding APOLLO-26.

Developed by Pavle Novakovic Published under NOVTech (Pavle Novakovic)

Art design, logo and original music by Nina Novakovic.

Original spacecraft concept created by Ena Novakovic. :)

WINDOWS NOTE

Windows may display “Windows protected your PC” the first time you launch the Demo. This can happen because APOLLO-26 is a new, unsigned application that has not yet built Windows SmartScreen reputation.

If you downloaded the Demo from the official NOVTech itch.io page, choose “More info” → “Run anyway” to continue.

LINUX NOTE

The Linux Demo is a 64-bit x86_64 build. Extract the ZIP, then launch APOLLO-26.x86_64. If needed, run: chmod +x APOLLO-26.x86_64 ./APOLLO-26.x86_64 Optional desktop shortcut: ./install-desktop-shortcut.sh On some Linux desktops, you may need to right-click the shortcut and choose “Allow Launching”. Requires a 64-bit Linux system with OpenGL 3.3 / OpenGL ES 3.0 graphics.







Download

Download
APOLLO-26_Demo_Windows.zip 66 MB
Download
APOLLO26_DEMO_Instructions_Manual_EN.pdf 356 kB
Download
APOLLO26_DEMO_Uputstvo_SR.pdf 358 kB
Download
APOLLO26_Printable_Engineering_Workbook_P01-P20.pdf 151 kB
Download
APOLLO-26_Demo_Linux.zip 58 MB

Development log

Comments

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Top game👌🤌💪!!!

(1 edit)

Hello @AlexandarM, thank you so much for your comment! As I continue developing this game, I will do my absolute best to ensure the final result meets both my expectations and my daughter’s. :)

(1 edit)

Thanks you for your quick response 😎I look forward to that💯🤸

COOLEST GAME ON EARTH. Its so imersive i love it so much. ‼️💯

THANK YOU SO MUCH!

This is becoming an amazing journey for both me as the developer and my daughter, who is creating the art design and music for the game.

This is only a small Demo so players can get a feel for APOLLO-26, its programming mechanics, atmosphere, and mystery.

The full Version **1.0 **

will go much further, with many more problems, systems, story development, and surprises.

I really hope it becomes something special for fans of programming puzzles, retro sci-fi, and this kind of engineering-focused game.

Thank you again for playing and for the support — it really means a lot to us!

CANT WAIT! For V.1.0 ITS GOING TO BE AWESOME!