What Mongoose Traveller is, is on the market in print format.
True, and it receives ongoing support, from Mongoose as well as from
a number of third party publishers.
This means that there will be new material of various kinds for the fore-
seeable future, and this material will be closer to the current tastes and
expectations of most new - and many old - science fiction gamers than
Traveller material of versions published decades ago.
You only have to take a look at the stuff that has already appeared and
is selling well, from Spica's Career Book One to D.B.Gamedesign's ship ty-
pes (Venture Class, Ares Dragon Class) to Avenger's adventures (e.g. Ty-
pe S): They have a different, more up to date "feel" than older material,
simply because the authors have integrated more recent science fiction
ideas and influences into their work.
So, Mongoose Traveller is the "living", dynamic version of Traveller, one
continuing to grow with each new supplement and adventure and expan-
ding with each new setting, and always in contact both with the current
development in the sciences (quite useful for a plausible science fiction
game) and the contemporary mainstream of science fiction.
Compared to this, the older versions - as good as they are - are rather
"dead" and static, an unsupported closed corpus of material with almost
nothing new added to it, except by their devoted fans.
I am really not any kind of "Mongoose Traveller fanboy", in fact I only use
some few parts of it (character generation, ship building, trade system)
for my setting and campaign.
But I am well aware that any new Traveller material, any new and useful
Traveller ideas for my setting and campaign will come from Mongoose Tra-
veller only, because all the earlier versions are no longer productive.
For me, these are reasons enough to concentrate the Traveller part of my
gaming on Mongoose Traveller.
This horse is moving, and fast - from my point of view, the other Traveller
horses seem a bit too petrified to expect much from them.