Playbooks

Not in any team playbook.
Over G is a defensive set inside Big Nickel, and that matters because the play list is all coverage shells and pressure packages rather than route concepts. The 4-2-5 personnel puts four down linemen, two linebackers, and five defensive backs on the field, with the third safety (the strong safety or weak safety depending on the call) playing as a hybrid box defender. The "Over G" front slides the defensive line to the strength of the formation with a gap-exchange alignment, meaning your two interior linemen are aligned in the A and B gaps toward the tight end side. That front shift changes which blitzers come free compared to under or standard alignments in Big Nickel, and it also changes how run fits play out against inside zone and duo.
Use Over G as your primary front against 12 and 13 personnel, since the 4-2-5 keeps enough coverage on the field to handle a receiving tight end while the front slide still holds up against tight zone.
Show the same shell every snap and rotate post-snap: base out of Cover 3 Sky, then flip to Cover 2 Man or Cover 6 Invert on the same pre-snap look so opponents cannot pattern read your safeties.
On third and long, pair Casino Blitz or Pinch Blitz with a manual shade of the defensive line to whichever side the running back is offset, since the offense will slide protection away from him.
User the strong safety or a linebacker on all the Cover 4 and Cover 6 calls so you can cap the seam and rally to drags, but never user the free safety on Cover 1 Hole because the AI covers the middle better than a human moving laterally.
Against 3x1 trips, check to Cover 6 or Cover 6 Trap rather than Cover 3 Match, because the quarters side handles the vertical stem while the boundary corner keeps outside leverage on the isolated receiver.