DEFENSE STYLES:
The personnel matching
style will choose Run-Stop personnel when the offense is in Power, Base personnel when the offense is in Base, and Pass-Stop personnel when the offense is in Spread. This is an easy and neutral way of picking personnel, it will free you up to think about other choices, and it is a good style start a game.
Tackle
style is very effective against the run and can be strengthened with a bias towards Run-Stop and Base personnel. Cover style is very effective against the pass and can be strengthened with a bias towards Pass-Stop and Base personnel. Choose these play-cards based on the Tackle/Cover indicator at the bottom-left of the defense play-cards.
A conservative
style defense uses conservative plays about 75% of the time and will make the offense sustain drives down the field, and is also a good style to start a game.
An aggressive
style defense uses aggressive plays about 75% of the time and can be good or bad for you depending on how their offense is playing. It can increase the odds of a turnover if the offense is playing a direct style (running in Power and passing in Spread, and can increase the odds of an immediate touchdown if the offense is playing unexpected style (passing in Power and running in Spread). An aggressive-matching style of defense is very effective against a direct style offense.
You can adopt a
shut-down style using focus areas to stop certain offense players. For example, focusing outside in passing situations will shut-down passes to the WR and TE, and focusing inside will shut-down passes to the HB. Focusing outside in running situations will shut-down runs by the HB, and focusing inside will shut-down runs by the FB and QB.
You can adopt a forcing style and use focus areas to compel the offense to switch to aggressive plays. For example, focusing to your right in passing situations will force the offense away from conservative passes, and focusing to your left in running situations will force the offense away from conservative runs. This style can force the offense out of a conservative posture and expose them to turnovers.
Defense styles can be combined: conservative-running style, or aggressive-matching, etc.