Basically 2D Minecraft, but with more of a focus on bosses than exploring. It's fun. Try it!
(for more context and detailed information, check out one of the many MANY let's plays, or the game's wiki terraria.gamepedia.com) old review. Does not do the game justice in hindsight. Rewriting!

the comparisons to Minecraft are well-founded, but frankly a bit misleading. If you like Minecraft, you will probably like this, as it's roughly the same genre and concept, most notably the fact they are both sandbox voxel/pixel builders, and of course, the early game progression.
Pros:

• perfect mix of familiarity and novelty in its genre, especially for anyone that has played Minecraft, Starbound, or probably a few other games I just can't think of offhand
  
• Active and helpful discord
  
• Active developers. They've been putting out updates semi-regularly since the early days, and unlike the developers behind Starbound, they actually remembered their own anniversary (Chucklefish didn't even acknowledge Starbound's 5th)...
  
• thousands of items
  
• like 20 different boss fights, with different attacks depending on the difficulty level of the world you
  
• speaking of which, 3 World difficulty levels that affect not just how hard things hit, but EVERY aspect of the difficulty
  
• character difficulty controlled separately from world (there are also 3 levels of that, one of which is hardcore/permdeath)
  
• absolutely EPIC soundtrack
  
• May contain trace amounts of evil

Cons:

• Early game can feel a bit tedious, particularly if you've done it a few times. However, this can be mitigated by the fact you can share items between worlds
  
• Fluid mechanics are so buggy that they eventually just declared it all a feature. It's not necessarily BAD, but it certainly takes some getting used to. One time, I even had water that flowed infinitely from one point without pumps. It was interesting, to say the least
  
• Invasions and events that occur in response to your progress, such as Goblin Invasions, seem to know the most inconvenient possible time to happen (okay this one is actually just me joking because I can't think of any other cons at the moment)

[strike]Basically 2D Minecraft, but with more of a focus on bosses than exploring. It's fun. Try it! (for more context and detailed information, check out one of the many MANY let's plays, or the game's wiki terraria.gamepedia.com)[/strike] old review. Does not do the game justice in hindsight. Rewriting! the comparisons to Minecraft are well-founded, but frankly a bit misleading. If you like Minecraft, you will probably like this, as it's roughly the same genre and concept, most notably the fact they are both sandbox voxel/pixel builders, and of course, the early game progression. Pros:[list] [*]perfect mix of familiarity and novelty in its genre, especially for anyone that has played Minecraft, Starbound, or probably a few other games I just can't think of offhand [*] Active and helpful discord [*] Active developers. They've been putting out updates semi-regularly since the early days, and unlike the developers behind Starbound, they actually remembered their own anniversary (Chucklefish didn't even acknowledge Starbound's 5th)... [*] thousands of items [*] like 20 different boss fights, with different attacks depending on the difficulty level of the world you [*] speaking of which, 3 World difficulty levels that affect not just how hard things hit, but EVERY aspect of the difficulty [*] character difficulty controlled separately from world (there are also 3 levels of that, one of which is hardcore/permdeath) [*] absolutely EPIC soundtrack [*] May contain trace amounts of evil [/list] Cons: [list] [*] Early game can feel a bit tedious, particularly if you've done it a few times. However, this can be mitigated by the fact you can share items between worlds [*] Fluid mechanics are so buggy that they eventually just declared it all a feature. It's not necessarily BAD, but it certainly takes some getting used to. One time, I even had water that flowed infinitely from one point without pumps. It was interesting, to say the least [*] Invasions and events that occur in response to your progress, such as Goblin Invasions, seem to know the most inconvenient possible time to happen (okay this one is actually just me joking because I can't think of any other cons at the moment) [/list]