This game was released in 2011. By the year 2013, it had already sold 2 million.
For many game developers, this figure is a dream. Of course, there are more successful games. But it's a great sales figure for such a simple game.
Perhaps, instead of creating realistic animations, making satisfactory features is enough to make games cool.
If they had shown me this game before it went life, I'd say I wouldn't even sell 10 and I'd be wrong.
It is easy to make inferences about why you succeed after you succeed. But it's hard to make a consistent prediction before the future comes.
Even Terraria Twitch has close to a million followers. We're about to get into 2020, but it's still a popular game.
I have shared the Terraria map dimensions above. Good games.