I can definitely help you on the offensive side of things.
First, what I am about to say applies to any football game you play; 06, 14, doesn't matter. The tips I want to give you are for those who are stuck in an offensive rut. Whether you want to change your offense or to those who just have no clue or faith in oneself in calling the right plays at the right time. there are so many formations and plays now that it can be daunting for a newbie or to someone who isn't well versed in more than one type of offense. Excluding heavy option offenses (these require a totally different set of rules to succeed), the following tips cover 90% of the types of offenses out there.
I call this offense "The Common Sense Offense"
- Talent - Give the ball to your best offensive players. Read that sentence again. Your playcalling should be based on this. Have an awesome RB? Give him the ball! Talented-arm QB? Throw the ball.
- Passing - Go into practice mode and find pass plays that have one man beater and one zone beater. Certain routes are great against Man and some against Zone. Find those plays that have one of each so you don't have to waste your time hot-routing 10 times each play like some guys do nor worry about audibling every play. Rep them against Man and Zone. If you're lucky, you will find pass plays that have two of each.
- Running - Go into practice mode and find run plays that aren't glitchy and can give you 3+ yards most of the time. Rep them over and over until you find those concepts.
- Concepts - You only need a few pass plays/concepts and run plays/concepts, not 20 of each. Once you find 3-5 of each, run them over and over again. There is your gameplan right there. You really only need 1 inside and 1 outside run concept.
- 1st and 2nd Downs - For 1st and 2nd downs, pick your normal plays based off rule #1. I don't care if it is 1st and 10 or 2nd and 20, just give the ball to your best players with the concepts that work for you.
- 3rd Down - Find one 3rd and short play (5 yards or less) and one 3rd and long play (5 yards or more). Hopefully the plays you selected earlier already cover this. All of this applies for 4th Down as well.
- Formations - When you have no idea which formations you want to use, here is what you do. Pick formations that force the defense to play their weakest players. If the defense runs a 4-3 and has two bad outside linebackers then there is no reason why you should spread them out. Keep those two bad players on the field by using 2-wide sets, not 4-wide. If a defense has below average corners (especially their 3rd and 4th guys) go 4-wide and keep them on the field. If they go 4-3, then you have the speed advantage. If the defense has a bad MLB and a bad 3rd corner, force them to play Nickel. They will be at a disadvantage via size or speed if they don't adjust.
- How many formations? - You don't need 10 4-wide sets and 10 2-wide sets. Just pick a couple of each (or just one of each to keep it real simple). If you are lucky enough, you will find the handful of plays that really work well (pass and run) form the same formations to keep things even more simple. That is why you see Madden veterans use the same formations all the time.
- The Fab Five - You have 5 skill players on the field at all times, excluding QB and the O-Line. If the defense has no real weaknesses, then know who your best five are and use those formations to keep them on the field.
Hopefully this will give you a nice foundation to work off of. I don't want to give you actual plays because one concept might work great for me but doesn't for you and vice versa. The samegoes for formations. Depending on which game you play, some formations have plays that work great and the next game they stink.
Now most gamers can use either #7 or #8 has their main formation philosophy, and not both. It depends on your talent but I do know this. If their linebacker unit is terrible, I will do whatever it takes to keep those poor guys on the field and make them pay. Again, common sense. I also didn't go over how to beat certain coverages but their are routes that work against all zones.
You will have some games where you are in 4-wide mode all game and vice versa. Just play to your strengths and make them pay for their weaknesses.
Hope this helps!