Like Squinky, I generally have some sort of funny idea and work of it. The key to making them without a blockage, I suppose, is to know what's happening in your game. What kind of mood you want the entire game to represent. What kind of story. The intro is easily one of the most important aspects to a game, because it's through the intro that you can grab a player's interest and tell him what he/she is to expect for most of the game.
It's much easier to make an intro if you know where the story is going to take you. The intro should tell you who your main character is. Their personality and other odd and ends. It's probably a good idea to know what the ending of the game will be, as well as key aspects in the middle of the game. If you don't want to plan your game out in full out detail, that's fine. But you should always have some idea of where the game is going.
IThe hardest part for me is creating graphics. Next to that narrations and dialog are simple. Good luck, I'm sure it will be a great intro.
-MillsJROSS
It's much easier to make an intro if you know where the story is going to take you. The intro should tell you who your main character is. Their personality and other odd and ends. It's probably a good idea to know what the ending of the game will be, as well as key aspects in the middle of the game. If you don't want to plan your game out in full out detail, that's fine. But you should always have some idea of where the game is going.
IThe hardest part for me is creating graphics. Next to that narrations and dialog are simple. Good luck, I'm sure it will be a great intro.
-MillsJROSS