Install a game-building software program. Once this is done, select the game-building tab.
Create a character. Build every piece of the character using the Flash program's built-in editor.
Create fighting animations, which is stringing together a character's animations to create a move. To start, select a character model, then select "Next frame." Move the character how you want and continue to do so in other frames until the move is completed.
Design backdrops for your characters to fight against. For example, if you want to build a city background, use the draw tool and draw large, gray vertical rectangles with windows and a road in front of them.
Save the game project as a Flash file so that you can play it online or in another program.