Whenever it comes to these arguments, I just close the application. Anyone who claims that one of the games stole from the other is a belligerent fool. How do you think artists work? Picassos works defined an entire era. The man who composed Dual of Fates aka one of the star wars songs, John Williams, almost directly copied 2-3 already famous composed pieces. This isn't rocket science, if you see something you like, you'll want it, and then your try to obtain it in whatever way possible while being logical.
Further, we have players from all communities. MMORPGs, indie games, FPS, etc. Of course ideas transfer between games. People tell their game friends about one of their other games, and then it spreads and spreads.
Until the day Roblox steals code from Blockland, or Minecraft takes models from blockland, there really shouldn't be an argument.
