Method 1  Roll 4d6 but take sum of highest three dice for each characteristic. 
Method 2  Roll 3d6 and determine the sum. Repeat this a total of fifteen times. The player keeps the highest six sums and distributes them how he/she pleases. 
Method 3  Roll 5d4 and calculate the sum for each characteristic, but sums greater than 18 are set to 18. 
Method 4  Roll 4d4, calculate the sum of the 4 dice, and add two for each characteristic. 
Method 5  Choose a character (class/race), roll 4d6 (sum of highest three dice) for each characteristic, racial bonuses are applied, and minimum values are awarded if not rolled. 
Method 6  Roll 3d6 for each characteristic and 10 bonus points can be distributed among the characteristics. When adding bonus points, no characteristic can increase past 16. 
