Xenko

Xenko is open to the public sourced c+ and c# game engine that you can create your own games on your personal computer device without any falter or having to install/download or pay to try. Xenko will allow you to create your own game under your under discretion. You will not have to talk to anyone, or even pay for this product, it is free to use and it is open sourced meaning its all community based, you can create your game at your own pace without anyone bothering you ever again about it, it's a fantastic product because you don't have to concern yourself with anyone else, and it will allow you to practice and make your own game. Xenko comes with a game studio that you can learn and build functionalities for your game, it also comes with other designing software that allows you to build your own very game models without any copyright problems for yourself, Xenko is really good if you're a beginner or expert but need another program to do your own creative work that no one else will allow you to do, you should really give it a try because it's free and intuitive and you can do whatever you want whenever you want. 

The conclusion is that Xenko is really good if you want to build your own game without having to pay for software, it's completely open sourced. 

one of the best open sourced platforms for gamers and builders.