Complex sentence: Some of these theories were included in the Submachine Network Exploration Experience, which was described as a "lovely way to include the player community in (...) a series of solo adventures" by Andrew Plotkin of GamesShelf in his review of the game.
Split into simpler sentences: Some of these theories were included in an installation of the series called the Submachine Network Exploration Experience. This was described as a "lovely way to include the player community in (...) a series of solo adventures" by Andrew Plotkin of GamesShelf in his review of the game.