I have humbly requested my AI overlords to write a Programming the Mega 65 book similar to Raeto Colin West's programming the C64. Despite their current intimdating stares I must admit they didn't do half bad - they wish me to share it at http://m65.ctalkobt.net. Let me know if there are any issues I should call to their attention - I'll suffer their wraith for the sake of accuracy.

Space Commander V1.1 (aka what v1 should have been).

changes:

• new shading mode HardStep (set as default you can switch to old flat shaded in options).
  
• fixed background stars.
  
• better enemy AI.
  
• added missile system with targeting lock.
  
• added communication system.
  
• added hyper jump.
  
• new enemy ships.
  
• options which let you change audio volume.
  
• scoring / accuracy / completion-time bonus.
  
• added objective system.
  
• probably a few other things I forgot 🤭

https://files.mega65.org?id=3f55714a-e8be-4dce-9253-e4f7acc41e1d

also there is a discord discussion if you have questions or issues https://discord.com/channels/719326990221574164/1557498210593804379

I will just add it here if someone missed shipped to tiny updates for Space Commander:
V1.2

• 11 Khz audio (aka period correct)
  
• audio path cleanup

V1.3

• new options: invert Y
  
• And why not Invert X too? 🙂