This is -the- worst, most broken, luck-based, cheating game I have ever played in this genre. Probably of any game I've played. Read on, because I've got legitimate reasons as to why. (Skip to the end for the short of it)
This game isn't hard in the sense of 'challenging'. The AI is so broken that every single move you make WILL result in a positive outcome for the enemy. You connect three red-energy? Mines (the attack tiles) will spawn in from the side in the perfect location for the enemy to use on their turn. You match three mines? The enemy will use a healing skill and an attack skill in one turn.
I am a big, big fan of the original Puzzle Quest and 100% it, but within the first half-hour of playing this game I knew it was nothing like the first. Instead of just a health bar (the hull), ships now also have shield that you must depleat before you can start attacking the hull, which are replenished by matching blue tiles alongside hull and shield healing skills, making every game a constant back-and-forth of damage and healing. As well as a damaging skill, all enemes seem to have a skill that destroys all blue titles (restore shields) and max all of their energies, allowing them to heal and attack as much as they like, based on the tiles on the board (they will always match mines when they can, of course).
The writing is cliche, the characters one-dimentional, the music repetative (I've not noticed more than one track), and the map is designed to take as much time as possible to traverse (each system requires you to hack the stargate between them, which is an aweful, timed minigame. Even when you can move freely through hacked gates, your ship pauses on each system on its path. Delivery side-quests force you to travel to opposite corners of the map just to click on a base and move on, and this is all within the first half-hour of the game).
What does the game have in its favour? Well, the hexagonal grid is certainly a change from the standard Bejewelled-drop, though the way drops are effected is confusing and hard to predict, what with the biased tile spawning. The character art is stunningly rendered and the ships are designed nicely, which contrasts against the ugly, copy-paste-hue in-game environments. The game seems to think it's Freelancer, having faction trust, mining/trading/bartering, and rumor gathering, but this is just a thin layer of unimpressive gloss over a shallow and broken tile-matching game that will not let you win.
I have somehow spent 4 hours playing this game as of now, and I'm maybe two misions into the story, post-tutorial (missions being a fight, basically). I would say I've probably fought about 8 enemies so far, and each battle has had a minimum of two losses, each taking up to 10 minutes. I've had more than one fight where the enemy, who always gets the first turn, will combo off my entire shield and half my health in that first turn. It is unplayable to the point that I've though "Oh, well this must be a scripted loss, I obviously don't stand a chance", only to be met with a 'retry' screen. There is no difficulty slider, and I can only imagine the enemy will get harder as the game progresses.
If you like to have fun, relax with a casual game, listen to nice music, feel a sense of accomplishment and generally have a positive experiance, don't buy this game. Go get yourself Bejewelled 2, or if you're looking for that RPG twist, get Puzzle Quest 1. By all means get Galactrix if you want to prove me wrong and I'm just bad at a good game, just make sure you tell me how that goes for you. I bought this game at a high discount, and it was still too much for this level of awefully designed mechanics.
UPDATE: Having now given this game 8 hours of my life, I'm finally uninstalling and hiding it in my 'Unwanted' folder. Since the original review I am no further with the story, repeatedly losing every encounter (with all points put into my shields, no less) and literally falling asleep as I play. This game is so broken as to be unplayable, and the only game I have ever played that I beleive would legitimately put me into a coma.
DO. NOT. BUY. THIS. GAME.