I never played the original game on which this is based so Im afraid I can t draw any comparisons between the two but I can say that this is definitely a great game.
The turn based approach is a nice change from the usual frantic pace of many modern games allowing the time to think and plan a bit more and the occasional -zoom in- to a cut scene of your soldiers sprinting into cover creates a nice illusion of more involvement in the battlefield.
There are plenty of options for strategic choices in terms of the modules to build for your base, the perks for each soldier, research products, weapon enhancements and so on and since you are nearly always strapped for cash you simply cant do all of them. This means that you will not just end up with a group of near-invulnerable uber-soldiers that cant lose. Basically dont get too attached to them as some will unfortunately pay the ultimate price.
For me games really come down to one final question:- is it fun? The answer has to be an absolute yes! After a few hours play I am usually thinking along these lines - Just one more scan for aliens then I will stop, Just one more research project then I will stop, I will just wait until this soldier has recovered then I will stop. This goes on for another hour (or two) before I finally realise the time and eventually stop.
I do, however, agree with the previous review about the -casual tactical action game-, it is not a full on micro-managing affair. But, for me, this is exactly what I want as I dont necessarily have the time to invest in massive scale strategy games anymore like I used to ( a few years ago I would spend days playing the likes of Shogun, Medieval Total War, Europa Universalis, the Anno series etc)
One final point, as an added cool (well I think its cool) feature, if you play on an Alienware Laptop with AlienFX (as I do) then the game overrides your AlienFX settings and changes the keyboard colours between red and blue depending on whose turn it is, genius!