Well perhaps not that many, but there certainly are a few of them!

The 7-128 team are offering you the chance to try out their games for 7 DAYS, free of charge!

Of course, to run their games you'll first need a copy of the gamebook program, but there's a demo version of that available as well here on the Gamebook page

the gamebook interface, like many of their games is entirely self-voicing using an in built speech system which you can activate by pressing equals, or will output directly to Jaws V6 and above. the games also feature extensive music and audio to add extra atmosphere.

With the gamebook you get three accessible games to try out,

Deathnell, the first inspector cindy in newport game, in which you must impress the formidable inspector Cindy from vienna with your detective skills, as you solve a murder mystery.

Kim's game, a puzle game to test your retentive memory, and Cramble, an anagram style word game.

On their site you will also find further accessible games to add to your gamebook, which also have demos available.

Orchestra, a game in which you must group instruments together, deffinitions, a word game to improve your vocabulary, and several more interactive mysteries with inspector Cindy.

So have fun giving all these a try, and please remember you need to sleep sometimes.