Kaiju League (Monster League Clashes)

Overview

Kaiju League is a persistent monster-league loop where clashes resolve autonomously on a fixed schedule. Kaiju take damage every clash, creating a negative-EV game that nobody self-triggers.

Why AutoLoop Is Structurally Required

Two independent reasons:

1. Timing as attack surface: if an entrant could trigger the clash, they could pick the block in which the VRF reveal lands and only submit if their kaiju benefits.
2. Negative-EV free-rider: every entrant takes 5-20 health damage per clash, only one wins the pot. Rational trainers reason "let someone else pay gas." Everyone reasons identically, so nobody triggers.

Game Mechanics

• Kaiju: hatched at a fixed fee with initial health (e.g., 500). Health decreases with each clash via VRF-derived damage.
• Clashes: require 2+ entrants. Each entrant pays an entry fee. Winner is selected proportionally to health (weighted VRF).
• Damage: 5-20 health per clash for every entrant, derived from keccak256(randomness, kaijuId, "stomp"). Kaiju hitting minHealth are destroyed.
• Prize pool: entry fees minus protocol rake. Winner receives via pull-payment.

Revenue Model

• Kaiju hatch fees (100% to protocol)
• 5% rake on every clash prize pool
• AutoLoop gas fees on each tick

Deploy

forge create src/games/KaijuLeague.sol:KaijuLeague \
  --constructor-args 10000000000000000 1000000000000000 60 500 500 50 8 \
  --rpc-url $RPC_URL --private-key $PRIVATE_KEY --broadcast

Args: hatchFee, entryFee, clashInterval, protocolRakeBps, initialHealth, minHealth, maxEntrantsPerClash.

Dashboard

Play Kaiju League on the AutoLoop Dashboard.