Astro Stack is a balancing stacking game for 1 or more patient and steady-handed players! Using vibrant orange and brown terrain pieces inspired by the surface of Mars, players carefully stack rocks onto a game board modeled after NASA’s Opportunity rover (They'll get him back home some day...). Some rocks are cooperative. Others? Not so much.

The game includes a rover base and 8 different rock shapes, with two of each shape. Each rock behaves differently. Some rocks are stable and friendly, while others are awkward, slippery, and just ready to cause trouble.

You can play Astro Stack in multiple ways:

Solo Mode
Challenge yourself to build the tallest tower possible without toppling the rover.

Competitive Mode
Each player takes one full set of 8 rocks. On your turn, you can:

• Add a rock to your own tower to make it more stable
• Or sabotage an opponent by placing one of your harder-to-stack rocks on their tower—making it taller and more dangerous

If a tower collapses, the mission fails.

Simple rules, quick rounds, and constant tension make Astro Stack perfect for game nights, desk challenges, or anyone who enjoys testing gravity and nerve. Every placement matters! And sometimes, helping yourself means making Mars a little worse for someone else.

Assembly Drawing:

Detailed Assembly Guide:

1. Print all parts either using the 3mf or STL files
2. Break off all supports
3. Using a pair of needle nose pliers (or your hands if you have insane grip strength) hold the wheel by the axle and gently twist while holding the wheel still. The part should break off from the wheel to allow the wheels to roll.

     4. Glue the (6) axles into the (2) wheel bars

     5. Glue the main body to the panels using the guide pins to align the two pieces

     6. Glue the white (4) attachment pegs into the wheel bars

     7. Glue the attachment pegs into the (4) holes on the side of the main body

     8. Glue the pegs on two smaller eyes into the holes on the under panel camera

     9. Glue the antenna, antenna shroud, and head tower to the upper panels using the guide pegs on the panels

   10. Glue the eyes onto the rover head and glue the assembled head to the head tower.

   11. After the glue has cured, gently turn the head of the robot to break it away from the pegs, allowing it to rotate up and down freely.

    12. Admire him.

Notes:

• All parts were printed in Elegoo PLA Pro
• Glue required to assemble parts
• Please enable supports for all pieces
• Attached zip files contain the original STL files of the models
• The orientation the models are in is tested and preferred, but you can try a different orientation that works better for your specific printer if you know your printer and have a well-calibrated filament profile. Please note that this may affect the tolerance of some parts.