Sequence is a game that is played with a board, a deck of playing cards and chips. In the original Sequence board game, players or teams try to mark five spaces in a row. You can make your own sequence game by changing the board or the win conditions.
Determine your game's sequences
Sequence games involve marking a certain number of adjacent spaces to win. Sequence games can be largely luck-based, as in bingo, or strategy-based, as in Pente. Choose what kinds of sequences are required to win your sequence game. Figure out how spaces are chosen and placed. Determine how you want players to share space, block each other or replace each other.
Design the board and other pieces.
Sequence games need to have a board and some kind of token, chip or other method to mark the board. Start drawing your board by creating a grid with as many spaces in whatever shape you think you will need. Next, label the spaces on the board if needed. These spaces can be labeled like playing cards or coordinates. The way the spaces are labeled should correspond to any randomizing element that determines where tokens are placed.
Test your game
After you have built a prototype of your game, test it. See if your goals or win conditions can be met. Try letting other people play it, and make sure that your rules can be understood.