I have a lot of ideas but they're all trash
A worrying amount have to do with bombs

Here's some relevant games/mechanics that come to mind:
Lemmings - a puzzle game about trying to get dozens of creatures to the level exit by sometimes sacrificing some of them
Nidhogg - a competitive fencing game about getting to be eaten by a giant worm
Life Goes On: Done to Death - a puzzle game about dying, respawning and using your previous dead body to proceed
Burnout - Crash Mode, a gamemode where you crash a car into a busy intersection for points
Star Control 2 - a game where you're the captain of a massive spaceship with hundreds of crew members. they act as your healthbar in space battles.
Killstreak bonuses
- Strategy games in general
There's also the narrative theme of death itself but idk how I'd make that into a game https://youtu.be/cZYNADOHhVY