Obvious Yeses:
All of these are features that can be added to any maze:
Find Items Maze - Where a solver must find items in maze to solve the maze
Avoid Items Maze - Where a solver must avoid items in maze to solve the maze. Essentially the items become extra walls in the maze.
Go and Return Maze - The solver must reach a point in the maze then return to the start (which is now the goal). Sometimes they must use a new pathway than the “go” to return.
Dual Entrance/ Exit Maze - The solver chooses which is the start and which is the goal
Object as Goal Maze - Instead of finding the exit of a maze, the goal is to get to an internal object.
Warp Zone Maze - A feature in a maze that allows the solver to jump around the maze.
Mixed Section Maze - Using multiple constructions to make a maze.
Racing Maze - Yes. You can race with any type of maze.
Unsolvable Maze - a maze with no solution is possible for any type of maze construction.
Depth Maze / 3D Maze - this is a feature that can be added to any maze, including a circle maze.
Free Drawn Maze - Yes. You can free draw any type of maze. Drawing a circle by hand is hard !! Have you ever tried it ?
Cut Thru Maze - Maybe this isn’t obvious, but you can ‘cut-thru’ any shape to make a maze.
Horizontal/Vertical Circular Maze - A circle shape with pathway lines moving vertical or horizontal. Yes. From a design standpoint it doesn’t fit well, but it is possible.
The Yeses:
Standard Maze / Standard Equal Maze - Yes.
Kids Maze - Yes. A smaller version of all the workable mazes that is easy enough for kids.
Spiral Maze - While my version of a spiral maze uses the square version this is where a circular version is actually preferred !
Maze Art - Yes to circular objects. The Moon and Spaceship Earth at Epcot Center are 2 examples I have made of circular Maze Art.
Draw and Cut Maze - Yes. Each of the mazes noted above were made using this method. For a plain simple circle there would be nothing to “cut”, but I still lean yes.
Pod Maze - Yes. Any shape works for a pod maze. Here is an example of triangles and a central circle using a standard maze construction.