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This license applies to the computer software "Symulator Pojazdów Szynowych MaSzyna", below referred to as the "Simulator". License is an agreement between the Authors of the Simulator and Licensee, who is a natural person, legal person or other entity.

1. Licensee may copy or distribute through any means verbatim copies of the Simulator, provided that they conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all the notices that refer to this License and to the absence any warranty. If Licensee charges any fee for copying or distributing the Simulator, even if the fee solely refunds costs incurred by copying or distribution, such action requires explicit approval of those Authors of the Simulator, whose are main creators of it.
2. Licensee can modify their copies of the Simulator and any portion of it (single computer file, or group of files that could be functionally distincted from the Simulator), thus forming a work based on the Simulator, and copy and distribute such modifications or work under the terms of Section 1 above, provided that they meet following conditions:
a) Licensee must cause the modified files to carry prominent notices stating that you changed the files and the date of any change. If it is possible they should also provide information about the Author of the original file which was modified.
b) Licensee must cause any work that they distribute or publish, that in whole or in part contains or is derived from the Simulator or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License.
3. Copying, distributing or using original, as well modified on terms described in Section 2, parts of the Simulator, in particular textures, sounds and binary blobs for purposes not associated with using them in Simulator, requires approval of the Author of corresponding parts of the Simulator.
4. Each time Licensee modifies or redistribute the Simulator, the third party automatically receives a license from the Authors of the Simulator to copy, distribute or modify the Simulator subject to these terms and conditions.
5. Because the Simulator is licensed free of charge, there is no warranty for correct operation of the Simulator. Authors provide the Simulator "as is" without warranty of any kind. Authors are not liable for any damages caused or consequential damages arising out of the use or inability to use the Simulator.
6. Applicable law for this license is the law applicable in Republic of Poland. All disputes, if impossible to resolve amicably will be considered by the court proper for the Author of the Simulator.
7. Licensee by running, modifying, copying or distributing the Simulator indicates their acceptance of this License.