TWINE is a super easy-to-learn and nice-to-use tool for making story games. So if you always wanted to make a game, tell a story, hate coding but wish to add more interactivity to stories - this is exactly your trustworthy new friend!
Twine works very much like a wiki system, but easier and with a useful branch visualization as seen above. You can add images and design your text with html and css tags. Even the addition of variables and conditions (if, then) with 'twee' is possible.
This is my first Twine game, named "Moebius" - a game about time loops (hint: It's not broken.) Play!
If you want to learn more about Twine, check out Anna Anthropy's short tutorial to the editor. Or read the official Twine reference. Or download Twine for Win and Mac.