Sequel galore!
I highly anticipated both titles, since I loved the originals, and I wasn’t disappointed!
Like its predecessor (duh!), this is a twin shooter, but with more emphasis on the puzzles. It has a gorgeous fluid engine, and most puzzles involved manipulating or avoiding these in some ways, collecting gems and rescuing miners… It doesn’t have much in a way of storyline, and its just an arcade game that’s fun to play…
Check out the gameplay (easier than trying to explain):
As I said, loads of fun… There’s always a but, though; the gameplay doesn’t seem as fun as the first one, don’t know if it is because the first one was new, and this game feels more suitable as an expansion pack than as a new game (although it’s long enough to justify full price)… The boss fights were harder and better designed, in my opinion, but the puzzles themselves were straightforward (and the lightless sections, which take up half the game) tend to get boring after a bit… 8/10
Ah, this is a gem… Although the critics were a bit nasty to this one, I think it was rather unfair.
Portal 2 is basically the same as Portal 1 (first person, puzzle based), but on steroids… It’s longer, it has more stuff thrown in (the gels, that give different properties to surfaces, like making you run faster, jump higher or being able to put portals in any surface), and the humor is great.
The environment is the real star in this game, telling a story by itself… It goes even a step further than the first Portal game, by going back to the 50s showing the initial “Aperture Science” facility… No, it’s not time travel or flashback… 
The game has now three voices instead of just one, GLaDOS returns, the sense and type of humor is intact… The only caveat might be that the puzzles are a wee bit easier this time around, but that might be because I’m already thinking in portals…
The game got so immersive that when I went outside after playing, I was looking at surfaces and thinking “I could make a portal there”!
It’s an amazing game and I can hardly wait to play the co-op (since loads of people have told me it’s the best part of the game… if that’s true, it will be like crack!)… If I find the co-op that amazing, I’ll add an addendum to this! 10/10