As promised, here is the 2nd part of the Planet Probe update.
I’m not going to repeat details mentioned in the first update, instead I’ll simply mention that the tile flipping has been fixed, and priorities adjusted slightly based on what seems logical. A few sprite-sprite priority issues remain where the crosshair goes behind certain targets, but I believe these are part of the original game; multi-pass sprite drawing is exceptionally uncommon.
I left the name entry screen to time-out after entering my initials so that people can hear the brief tune played there.
The game doesn’t appear to have an ending, if you turn on the invulnerability dipswitch it loops the same few backgrounds etc. which means it plays a lot more like an ‘old skool’ shooter than anything else.
*edit* since this Planet Probe is incapable of predicting earthquakes, or what music is going to play when I don’t actually have any speakers plugged in or turned on I’ve recorded another video which plays an alternate melody on the high score table. It appears the game uses a different piece of music when you get the top high score compared to the others, this should be the right one this time! As a reminder, the one composed from memory by Bisboch 20+ years after playing the game is here
*edit2* since recording these videos I’ve decided to swap the priorities around a bit, the glitches are just too obvious in the 2nd video the way things were IMHO.