Threshold

Threshold is an adult furry-themed comic. It was created by artdecade, who is the author of several webcomics.

Threshold tells the story of a world in which "using virtual reality networks, programmers can create any world or pleasure one might desire, and hackers can manipulate those realities, steal industrial secrets, and even control other users".

There are four parts available for purchase. The first was published by FurPlanet in September 2011, the second in February 2012, the third in July 2013, and the fourth in January 2014.

Part 2 was available for a while on Amazon, but, as of March, 2014, is listed as out of print.