Very plain corridors. But much prettier rooms. Roboquest also includes a full-screen view option. However, even on my Pentium 120 the full screen view slowed the frame rate down to a crawl. On anything short of a Pentium 166, the full screen will probably be unusable.
Full screen is pretty but slow.
Unfortunately, just like the construction set, it's too limited. There are only five floors in the castle maze and only three difficulty levels. Without a facility for designing your own levels or for randomly generated mazes, there just isn't enough for extended game play. Older kids especially will probably find themselves through with Roboquest inside a week. It just needed to be one or the other.