Hello,

I am contacting you regarding to this:
https://play.google.com/store/apps/details?id=com.playstarz.mine

I (and the Minetest community) appreciate your work on this. However,
there are two main issues with your release.

1. Compliance with Minetest Engine's GNU LGPL 2.1
----------------------------------------------------

We, and the law, expect that the license terms of distributed software
are followed. Here are the incompliances I found (there could be more):

- Source code under LGPL (with modifications) is not included in your
  distribution, nor is it offered by you when or after receiving your
  distribution. You must make it available somehow.

- Your distribution does not contain license and copyright information
  related to the Minetest Engine.
  - In the official Minetest distribution, the README.txt file
    contains most of such.

Without following those points, you don't have the right to distribute
your version of the software.

2. Usage of the name "Minetest"
----------------------------------

This stuff is backed up by trademark law.

When using the name "Minetest", it is expected and required that you
respect the Minetest community.

Currently your game does not do it, because of these reasons. All of
these can be fixed, after which you may use the name:

- You must credit those who have made all this possible. In no
  circumstance it is acceptable to remove the "Credits" tab from the
  menu - put it back and include yourself or your company at the top
  under an "Android Port" subtitle. Yes, your work is highly
  appreciated too, as long as you respect us.

- You must not misrepresent the Minetest community or developers.
  Provide a link to http://minetest.net/ on your shop page and your
  homepage.


// Perttu Ahola (celeron55)