Mahjongg Builder 2 is a free Android game developed by Alexei Anoshenko. It is a collection of 19 mahjong solitaire games, each with its unique figure made of 144 tiles. The objective of the game is to disassemble the figure by removing two identical unlocked tiles in one move. A tile is unlocked if it has no tile on it, and its left or right side is free.

This game offers several features such as unlimited undo/redo, quick undo/redo, autoplay, bookmarks, demo, highlighting moves, and a built-in game editor that allows creating new game figures. The game editor is an excellent feature that adds to the game's overall appeal, allowing players to customize their gaming experience.