If you played a text-based adventure game, you've played interactive fiction IFa style of game made popular by Infocom. You wander around rooms, picking up and manipulating items to solve puzzles, defeat monsters and so on. The best examples of these games immerse the player in a world so well that the imperfections of the text based interface is forgotten.
Things have come a long way since the 8bit machines that ran those games. Without those early constraints Interactive Fiction games have become more complex, with modern interfaces and games that run in the browser. And, of course, adult interactive fiction AIF was inevitable. One way in which the complexity is increased is to allow the player's character to be more mutable; changing size, sex, growing fatter or thinner, or changing species.
These are all of interest when considering games for those interested in plump furries. An innocent champion is sent to battle a demonic infestation.
Plump furry adult interactive fiction
Do they remain pure, or succumb to the corrupting influcences that alter the character? Plenty of scope for developing a character that fits your interests. Includes demon, dog, cat, 'taur, naga, shark characters. Frequent updates, and ever more complex options. Subsequently inspired Nimin, and others. A man who treats women as sex objects is cursed and must live a new life as a woman. Includes werewolf, feline, avian, and demon transformations. You will need to give the game time to open up these options as the play is more like a dating-sim.
Games with m/m content
In a land of abundance, where people are losing themselves to gluttony and hedonism, you decide there must be something more out there. Flash based in-browser game, or download and play locally. If the link dies start at Noone's user. The game was in the scraps section at the time of writing.
Emerging from a cold war bunker into a strange mutated world, what must you do to survive? Windows: winglulxe, OSX: zoom. Flexible Survival is also a multiplayer game, and a book.
Cat, Horse, Lizard, Wolf, and Human player characters. Definitely on the furry side. Transformations are more optional than some of the other games here. If the link dies start at Xadrea's user .
Will you be man, woman, or futa? Will you transform into a bizarre sexual creature or will you merely live out a normal life? Pornarium includes images to go along with the text, and a feature-rich combat system. Transformations include cat and fox forms.
The sexual rpg
These games are in early stages of development, and offer limited gameplay compared with the perpetual-beta games above. A tail here, eras there.
Some of the women began developing a second and third set of breasts. Currently at an alpha stage of development. Has horse, rabbit, wolf, eagle, goat, and rat forms. To find the latest version or if the link dies start at Redraster's user.
The game is in his scraps gallery at the moment. Currently at an early alpha stage of development. Has dragon, cat, wolf and horse forms.
List of furry role-playing games
Unfortunately the last update was in May To find the latest version or if the link dies start at Syanus's user. Java based game to download and play locally. If the link dies start at Vilified's user. Discover what has happened to your sibling, and probably get very distracted along the way.
While not in the same interactive fiction style as the above games, these two games might be of interest, but possibly not furry enough. Both are management style games. Sim style game with cow girls on a farm.
In a very early stage of development, watch that space. Not actually a furry game, but interesting as for early body type modification modelling. Board for discussion, announcement and programming of IF games featuring transformation.
There's also a Wiki which lists many games. The wiki give some good starting points. There are games with transformation into anthrosanimalsand mythical creatures.
Furry interactive text adventure games (nsfw)
Covers all kinds of furry games. You need an on SoFurry to read the group. No commercial use without owner's permission.