I have played over 200 hours of terraria.
so i know what i'm doing in these kind of games.
-----------------
I hope that the game is still under development, it could become great.
Right now the start of the game feels very slow and repetitive. I have been playing for 4 hours now and i do not have the feeling that i accomplished something.

EDIT:
24-4-2015
The game has been improved, it feels a lot more playable in terms of actually being fun. The start of the game is much faster now, thanks to the fact you can collect ores much quicker both through mining and killing certain creatures. The inventory system has been slightly improved, you can actually make multiple items at once now! Progress has been made and its getting better! Keep it up!

I have played over 200 hours of terraria. so i know what i'm doing in these kind of games. ----------------- I hope that the game is still under development, it could become great. Right now the start of the game feels very slow and repetitive. I have been playing for 4 hours now and i do not have the feeling that i accomplished something. EDIT: 24-4-2015 The game has been improved, it feels a lot more playable in terms of actually being fun. The start of the game is much faster now, thanks to the fact you can collect ores much quicker both through mining and killing certain creatures. The inventory system has been slightly improved, you can actually make multiple items at once now! Progress has been made and its getting better! Keep it up!