World Phasing System is a blueprint communication system that enables you to make changes to actors in the world everytime the player makes a choice or performs an action. You can create a series of events (phases) that will change something with every step (stage). It will fit nicely in any story-driven/horror/RPG game.
If you..
...want to spawn an enemy when the player starts a quest.
...want to open a gate when the player flip a switch
...want to activate a trap when the player steps on the wrong tile.
...want guards to attack the player when he/she hurts an innocent civilian.
...want a whole fraction to turn against him because he chose the wrong side in the conflict.
..to jump scare a player when he/she enters a specified room or corridor.
then the World Phasing System is for you!
Nearly everything is possible!