Twine is a visual tool for making interactive fiction.

        
  if (objectTaken==true) {initiate rain()};
      
      

The interface is pretty easy to understand. Click on new game, click on the boxes, connnect to one another, you get a game.

        
if (game==good) {initiate publish()};
        
      

       
exports.myDateTime = function () {
   return Date();
};
       
     

There's sugarcube, harlowe, snowman, and chapbook.

        
var http = require('http');
        
      

Different Storyscripts have different styles.

        
var fs = require('fs');
        
      

You can extend your storyscript's features with javascript.

        
var url = require('url');
        
      

Now this is something interesting, write your entire game with text files and compile with tweego.