Hello everyone, from here YNS - Kamezuk, the project manager. 
So finally we have a build made in Unity3D. We had to create several systems from scratch with our own code and since we didn't want to buy assets and save money, many things are still not working 100% So let's go by parts:

• Save and load systems are provisionally operational. (You can access the save system via your cell phone via the ESC key)
• Bugs a lot of bugs but fixable