Planet Probe (prototype?)

Planet Probe is a two-player vertical shooter released in 1985 from Crux or Kyugo—its origins remain somewhat unclear. As pilots of exploratory probes, players are tasked with navigating an alien planet and surviving its hostile defenses. The game presents a parallax scrolling background, creating the impression of depth as you ascend through varied environments. Players utilize available weaponry to fend off waves of attacking enemies on their mission to escape the planet. Control is achieved via a four-way joystick and two buttons, allowing for straightforward maneuvering and firing. Planet Probe’s technical specifications include Zilog Z80 processors and an AY-3-8910A sound chip that contributes to the game's audio experience. Notably, during certain stages of gameplay—particularly beyond the arctic regions—players may encounter a brief appearance of imagery reminiscent of the film E.T. The Extra-Terrestrial, with a silhouetted figure and bicycle visible in the sky.