How to create game launcher in UE4 with blueprints?
Do you mean how to create an .exe? For that you don’t need blueprints. You need to package your project: Packaging Unreal Engine Projects | Unreal Engine Documentation
Ahhh alright, I gotcha. You’d probably make a separate level with the launcher inside. When you press ‘Start’ it would then load the actual game level (or main menu level) To do that you can use the Load Level node. Not quite sure how to get it window mode though 
I know it’s definitely possible in C++ (and maybe by using command-line arguments - https://docs.unrealengine.com/latest/INT/Programming/Basics/CommandLineArguments/index.html#rendering)
You could also look into editing .ini files after packaging. I think there should be a GameUserSettings.ini somewhere, in which you can specify whether to run the game in fullscreen or window mode - UGameUserSettings | Unreal Engine Documentation
There is no way to do it in blueprint I think. - Maybe by using Execute Console Command
Hi, I want to ask: how can I do launcher for my game? How can I make sure that when you start the game opened window not at full screen(!) and when I press “start” I have full screen? And if you know, how to remove window menu?
I know how to do it, but I immediately started a game, but I wish that before this run launcher
Hello MrTanhic,
Thank you for your post. A member of the community has created a game launcher thatyou might find useful. The post is located here:
Hopefully this tool has the functionality that you are looking for.
Cheers,