Pros:

► It uses JavaScript and C# LANGUAGE for scripting
► Unity provides an Asset store where you can buy or find stuff, that you want to use in your games
► You can customize your own shaders and change the way how Unity renders the game
► It is great platform for making games for mobile devices like iOS, Android and Web (HTML5)

Cons:

► Compared to Unreal ENGINE it has got low graphics quality
► Interface not user-friendly and it is HARD to learn especially for beginners
► It REQUIRES good programming KNOWLEDGE as such most of the stuff runs on Scripts.

Pros:

► It uses JavaScript and C# language for scripting
► Unity provides an Asset store where you can buy or find stuff, that you want to use in your games
► You can customize your own shaders and change the way how Unity renders the game
► It is great platform for making games for mobile devices like iOS, Android and Web (HTML5)

Cons:

► Compared to Unreal Engine it has got low graphics quality
► Interface not user-friendly and it is hard to learn especially for beginners
► It requires good programming knowledge as such most of the stuff runs on Scripts.