When in doubt, take Die Bahnwelt for a spin. (I actually really wanted to get a certain FM Towns game running for this week’s showcase, but those CD dumps are less reliable than I had hoped.)
exodus These tunnels would likely run better on a PC Engine, though obviously not the same way. You’ll notice the reliance on monochrome background elements for the walls, base, and backdrop. That’s a very common technique used by programmers to make PC-88 games scroll better in software, as the platform does allow you to store multiple VRAM color planes for advance calculations. This presumably freed up Telenet’s coders to focus on speeding up software sprites for enemies and projectiles.