High level overview
A roguelike dungeon crawler built on polygon etc. that costs 1 MATIC in crypto per life
How it works
Each warrior gets a wallet address, the same for all sessions & players
Dying to the warrior transfers your loot bag (MATIC & achievement NFTs) to that warrior
Any player who kills a warrior gets whatever MATIC it's holding
Can form guilds
Bad guilds are worth basically 0 because no one dies to them
Beefy boss guilds could accrue a non-trivial reward (NFTs for tiers of MATIC in loot, etc.)
How it looks
A pixelated dungeon crawler
Could use the open source clone of an old Prince of Persia / Metroid / Castlevania as a base game (eg: https://github.com/NagyD/SDLPoP)