This is a paid asset, but now you can download QMaze Lite Free.
Detail this asset from Unity Store: Original Link
QMaze Lite v2.1 (Latest version)
“If possible, please buy the package to support the developer”
QMaze is an easy-to-use maze generator. It’s well-suited for generating random levels.
Watch Youtube Video | Play Web Demo
– The maze is created using 6 basic pieces
– The maze’s pieces can be of any size
– The maze’s pieces are set in a pack for a simple change of theme
– Each piece can be set by several geometry types for greater variability
– The maze can be generated during the edit-time or the run-time by a code
– Several different mazes can be present in a single scene
– Mode of generating the maze with the only path
– Fixed or randomized starting and finishing blocks can be additionally generated (one or several; the exact position and direction can be specified or it can be random)
– The maze can be generated with geometry or in the form of a maze data array with which you can do whatever you like
– The maze can be generated both synchronously or asynchronously with the ability to receive the current progress of the generation process
– One demo scenes is supplied
– C# source code is supplied.
QMaze Lite is the limited version of QMaze.
Compatible with Unity 4.6.0+ / 5.0.0+ / 2017.1+ / 2018.1+
(Free and Pro)