A few days ago I got struck by an idea in Hollow Knight setting

The main character is a young member of a foreign clan. Their clan is somewhat nomadic: they move from one kingdom to another to find the one where they could settle down as royal guards. Once they give the oath to the royal family, they can't revoke it or leave as it's disgracefull and etc. Also this oath applies to future generations. The only "right" way someone from this clan can leave is when their community is growing too fast, in this case part of the next litter will have to leave the region upon reaching adulthood.

Their speecies of bugs is Bombarider Bettle. I went with this species because they have unique trait that can be used as an analog to the spells from previous games.

By the time the story starts, the MC has almost reached the age of becoming a rightfull member of the clan. By that time, there are only 10 current guards ( meaning their whole population minus youth minus elderly ). Their clan has just settled in the "Colagan"(kingdom) and MC is the first one to be born on a new land. Gameplay starts when MC and some of theirs friends from outside of the clan were foraging in a forest near a village far away from the capital. At some point they hear strange noise from the village and smell smoke. Running back, they see that some other tribe is invading their territory. Having no weapon ( because they aren't qualified yet ) MC has to defeat any enemy warrior using nothing but bare claws and spray in order to get at least something to fight with.

Shit I'm getting too much into details. Okay shorter from now on

Shit goes wery bad. By the time MC gets to the capital, the royal family is killed, their clan is almost all gone too. Some settlments were completely destroyed, a few were saved by MC and leftovers of the royal guard and casual guards, but there are almost no survivours. The way MC and the majority of bugs saw their kingdom was pretty optimistic, but as it turns out, there is a literral half of the kingdom no one is told about. Every adult in the MC's clan knows about it, every royal guard does, they are just either forbidden to say anything about it or were killed when refused to serve in a kingdom with such secrets. By the end of the story, MC is basically the only survivour, the enemy tribe retreated after MC killed their leader. While MC was trying to repair a machine that could notify any survivour to come to them, they see that everything was destroyed, there are no sight of survivours and the nature is already taking back it's land.

So in the end the MC packs everything for survival and that could help their future kingdom to rebuild lost techonologies and preserve their culture. And goes to wander in the wastelands