Below is the majority of the post, before it gets in to all the links and such, run through SMMRY[0] set to only use 7 sentences (92% reduction). It obviously doesn't tell the full story, but it isn't bad for a tl;dnr.
My name is Maxim and I'm an independent game developer.
With millions of downloads it is definitely my most successful game so far, and that's thanks to a very active fan base which I'm very grateful to have.
It's really cool to see people play the game in front of your eyes.
You evaluate behavior - are they passionate gamers? Or rather cold business people.
You check out their game - it looks like a copy of a popular game you know.
The answer So as with many other people who offered to buy the game - you politely decline.
How come? How come a copycat can use the name of the original game? You guessed it... trademarks.