A downloadable game for Windows and Linux

When the aliens first attacked, we bravely met them head-on. Soon our pilots were overwhelmed by sheer numbers. They got separated and taken down one by one. Still we kept sending the best we had. What else could we do?

Laser Sky Zero is a retro shoot'em up in 8-bit style, with endless gameplay: blast wave after wave of alien invaders in your lone spaceship, for as long as you can last. There will be powerups to help you along the way: more life, better guns, protective shields. Just watch your energy levels, and don't let yourself be cornered. Beware, some enemies can be hard to take down!

System requirements

  • Intel Atom 1.6 GHz CPU;
  • 800x600 screen resolution;
  • Windows XP or a Linux from the 2010s.

How to play

With the keyboard:

  • arrow keys to move;
  • Space to shoot forward;
  • Left Alt key to shoot backward.

With a controller:

  • left analog stick to move;
  • button 1 to fire forward;
  • button 2 to fire backward.

Either way, the following keys are handy:

  • Pause/Break to (un)mute the sound;
  • Enter to (un)pause the game;
  • F11 to toggle full screen
  • Esc to leave the game.


Game made with sdlBasic. The runtime itself is free software under the Lesser General Public License (LGPL).

All assets are under a Creative Commons Zero license.

  • Font: Bestead Extended, by Ben Harris, courtesy of the Open Font Library.
  • Audio from the Superpowers Asset Pack, courtesy of Open Game Art.

Special thanks to the sdlBasic community for feedback and encouragement.

Install instructions

To play the game, just unpack and run. On Linux you'll need the SDL_net 1.2 library installed. Note: the game doesn't actually connect to the Internet.


laser-sky-zero-linux32-20180810.zip 1 MB
laser-sky-zero-win32-20180810.zip 1 MB


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Fun little game, felt a bit sluggish on my pc, not sure if it's intended? Nonetheless it's fun and I think it looks good :)

It feels like a nice little retro shoot 'em up. The movement of the ship is slower than usually in these, but I'd guess you could call it more realistic. So instead of using your ninja-like reflexes to avoid bullets while shooting enemies, this game seems to be more about taking some risks (= damage) when it's worth it and then be ready for those health packs whenever they appear. You seem to get points from distance too, so it's not always worth it to dive into the deepest depths of the bullet hell.

I'd like to invite this game to take part in our Game Development World Championship!


Thank you for the nice words!