Torg - Roleplaying the Possibility Wars
A multi-genre game set on Earth being invaded by beings from other dimensions (""cosms"")¸ who have transformed swaths of Earth into ""realms"" where different laws apply: simulating a traditional genre with a twist. i.e. Egypt is transformed into a pulp action realm¸ England is transformed into a traditional fantasy realm¸ etc. The system uses a 1d20 roll (open-ended on 10 or 20) which refers to a universal chart that give ""bonus"". Action resolution is by comparing bonus + skill vs difficulty. It has an exponential scale of game ""values"" similar to the MEGS system (from DC Heroes). It also uses a ""Drama Deck"" of special cards. Each round in combat¸ a card is turned up to show initiative and special opportunities. Further¸ each player has a hand of 4 cards which can be played to cause special events. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim"
TORG RPG: Now a primitive realm of dinosaurs and spiritual magic exists in North America¸ a fantasy realm of magical creatures and high sorcery invades the British Isles¸ and a theocratic Cyberpapacy springs up in Western Europe. A new Egyptian empire¸ a high-tech espionage realm¸ and a terror-filled reality of horrific monsters also join the invasion. But Earth is not helpless. Standing between these Possibility Raiders...