If you don't feel like reading the entire things here's the summary:
As with any game, keep in mind that this may not be the right combination of elements for you. I'd say if you enjoy tower defense games, roguelike mechanics, science fiction settings, and a subtle sense of humour, there is a high probability that you will enjoy this one. If you get easily frustrated or like strategy based only on skill, without an element of luck, perhaps this is not the game for you.
Personally, I love this game. It has all the right ingredients for me, and it's quickly become a favourite. I can't praise it enough.Good points:
+Solid design and game mechanics.
+Beautiful pixel art.
+Immersive soundtrack and sound effects.
+Great characters and subtle humour.
+Endless replayability. Every game is different, and every combination of heroes and items will make you rethink your approach.
+Good time versatility: you can either pick it up for half an hour or half a day. Though a complete run will require several hours to complete, once you know the game mechanics it's relatively easy to pick up a game partway through.
+Relatively frequent updates. In a time where far too many games get abandoned in Early Access stage, finding developers that actually listen to the players and release updates seems such a rarity!Possible caveats:
-I have not tested the multiplayer
(The general consensus seems to be that it still needs some work. Same with some crashing issues. The developers seem to be aware and working on it.)
-Difficulty spike towards the later levels. Even the easiest settings can be very, very challenging. This may make the game feel unbalanced.
-On that same note, bear in mind that you require both skill and luck to win the game.
These points are not a problem for me, I've played old school roguelikes and this one feels pretty forgiving in comparison, but it may not be everyone's cup of tea. A bad combination of items, heroes or rooms, and your late game may become nearly impossible. A good one, and you can win with much less effort (though a certain degree of skill is a must, and you will still be punished quite severely for acting foolishly or carelessly).
I do like that element of luck, and find that any frustration vanishes fairly quickly in the face of the next challenge (a rarity for me these days, as I don't have much free time and seem to have grown old and grumpy when it comes to frustrating games). I find luck a perk, rather, something that distinguishes this game from other roguelikes, and I think the immersion really helps, in my case.
-Some extra content is unlocked separately
I'm making a note of this because I've seen some nasty comments around. There is a special edition of the game (crystal pack) that unlocks an extra character and ship, but if you want the other extra character and ship you have to buy the special edition of Endless Legend, as well. I believe that the developers plan to later unlock this content, but are giving this option now for early supporters of their games, which I think is a fair strategy. I think this is much preferable to standard DLC, in any case. Your opinion may differ, so I think it is fair to give a warning.
(Edited to correct a sneaky typo!)