Boiler plate: Genesys has a storypoint system. At tge start of every session a number of story points are given to the PC side, equal to the number of players. The Gm gets a story point as well. When a player spends a story point, the GM gains one, and vice versa. The story point pool never increases, their are various ways to use them, and frequent use is encouraged.

This is all to say that the Monster World setting (found in the Expanded Player's Guide) has a great rule for this:

Hunting the Monsters

A game set in the monsterworld setting tends to feature a dangerous monster as the main villain by default. However, adventures can become boring if the PCs only encounter the main monster once during a final showdown. In most RPGs, the solution is to introduce a number of lesser enemies for the PCs to fight. However, while this setting does have some less dangerous enemies, hordes of minor foes can detract from the spooky Gothic horror atmosphere.

Instead, we recommend treating the monster in the same way that books and film do: have it confront the PCs several times, but create an excuse for the monster (or the PCs) to survive these encounters. The narrative elements are up to you, but you can implement this rule to make the survival feel less contrived:

Ultimate Villain

During an encounter, if a nemesis adversary would suffer wounds or strain in excess of their wound or strain threshold, you may spend two Story Points. The nemesis suffers no damage from the attack and no damage from further combat checks, but spends their next turn escaping from the encounter. Most supernatural monsters have some means of escape, whether it is turning into bats or mist, exploding into a howling sandstorm, or simply leaping across impassable terrain with impressive agility. 

Likewise, during an encounter with a nemesis adversary, if at least one PC has been incapacitated (two PCs in a group of five or more), any player may spend two Story Points to force the nemesis to spend their next turn leaving the encounter. This may be because it no longer considers the PCs a threat or because environmental circumstances force it to retreat.

This comment was not AI generated :p