We recommend checking the downloaded files with any free antivirus. The software lies within Games, more precisely Puzzle.
From the developer:
Khufu is a unique puzzle game designed with a pyramid shaped board and pieces. It features online multiplayer (5 players at once) 2 player offline, and 2 customizable game modes. Online multiplayer also supports audio and video chat.
You may want to check out more software for Mac, such as Saqqarah, which might be related to Khufu.
Puzzle
Action