Monumental OverPower

The Monumental OverPower expansion debuted in May 1997 with 289 cards (22 Character Cards, 118 Special Cards, 14 Mission Cards, 36 Power Cards, 16 Teamwork Cards, 23 Event Cards, 10 Ally Cards, 20 Doubleshot Cards, 30 Location Cards).

Distribution
Cards were distributed in:
 * Booster packs of 15 cards
 * Booster boxes of 36 booster packs
 * Starter decks of 65 cards
 * Starter boxes of 12 starter decks

New Special Card codes
With the Monumental OverPower release, the following Special Card codes were introduced: LA LB LC LD LE LF LG LH LI LJ LK LM LN LO LP LQ ZZ

New card types
Location Cards were introduced.

New gaming mechanics
Homebases and Battlesites were introduced.