I have never played T&T. How is the system? What mechanics does it use?
Very fun and fast, a fresh rpg despite it's 30 years old.
There is currently two official versions: 5.5 th and 7th (30th Anniversary Edition ).
(6th was a fan made non official version)
I use the 7th edition with some parts of the 5.5th ed.
note: the 7th ed lacks a lot of the explanations, mainly about combat, which are present in 5.5.
Both are very cheap.
The 7th one is pocket size (in a metal box) and has several rules really different from the 5.5 th ed.
You can also find a pocket size version of the 5th edition from Corgi Books (UK) (for instance on the nobleknight site.)
(5 and 5.5 are the same. 5.5 only have a few more pages with some options and informations.)
about rules =>
You can find a very lite version of TNT 5 here: (in fact this is the old
gamebook-solitaire lite version)
http://www.freedungeons.com/rules/
some reviews:
http://www.rpg.net/reviews/archive/11/11474.phtml
http://www.rpg.net/reviews/archive/11/11764.phtml