King of Icefield(KOI)는 게임 후반(2세대 무렵, 첫 [[State vs State|SvS]] 이후)에 [[Hall of Chiefs]]를 대체합니다. 목표는 최소한의 지출로 모든 일일 보상을 해금한 뒤, 병행 이벤트에서 최대한 많은 점수를 내는 것입니다.

King of Icefield (KOI) replaces Hall of Chiefs later in the game (around Gen 2, after your first SVS). The goal is to unlock all daily rewards while spending as little as possible, then make as many points as possible on parallel events.

You cannot make points on multiple events at once during KOI, unless it is a seasonal event.

Daily Strategy

Day	Recommended Activity
Day 1 (Monday)	Fire Crystals; Fire Crystal Shards and a small amount of speed-ups to complete if needed, OR Charms. Using Fire Crystals on building lets you keep progressing and save speed-ups for SVS.
Day 2 (Tuesday)	Lucky Wheel spins may be enough (spin 60 times if going for 5 stars on the wheel hero this generation). Use some Hero Shards to complete if you spin less.
Day 3 (Wednesday)	Lucky Wheel spins may be enough. Use Pets items to complete if you spin less. This unlocks the 120-spin rewards and KOI rewards on 2 days.
Day 4 (Thursday)	Train troops. If you are FC3 or above, you may not need speed-ups if you time things well from Wednesday.
Day 5 (Friday)	Same as Day 1 — Fire Crystals; Fire Crystal Shards and a small amount of speed-ups to complete.
Day 6 (Saturday)	Train troops. If you are FC3 or above, you may not need speed-ups if you time things well from Friday.
Day 7 (Sunday)	Hero Shards — especially early in a generation to keep key heroes progressing.

같이 보기

• Hall of Chiefs — Earlier version of this event
• State vs State — Unlocks after first SVS
• Lucky Wheel — Appears on Days 2, 3 and 4
• Fire Crystal — Key resource for KOI points
• Speedups — Save speed-ups for higher-value days
• Events — All events overview