9 Kings: Low-Cost Swarm Guide for the Big Deck Rework

To play a low-cost "mob" strategy in 9 Kings following the Big Deck Rework, you must shift away from relying on single elite units toward accumulating high volumes of cheap troops. To execute this playstyle successfully, draft low-cost units early to flood the board, aggressively thin bloated cards to maintain draw consistency, and place weak units on the front line to fuel death-trigger scaling.

Drafting Low-Cost Units and Thinning Your Deck

Running a swarm strategy requires board saturation. Rather than skipping lower-quality cards during draft phases, pick up low-cost units even if their individual stats appear weak. Reaching a threshold of six or more active units activates minor utilities and passive buffs that scale across your entire formation.

Because a mob strategy naturally inflates your total card count, managing draw consistency is your immediate bottleneck. Bloated decks make it difficult to draw vital support spells or synergy items on key combat turns.

Draft Weak Units Early: Build board presence immediately to soak up damage and prepare for scaling synergies.
Use Shop Refreshes: Refresh shops specifically to search for card-removal options once your core units are established.
Prune Low-Impact Cards: Select relics and shop options that remove dead-weight cards to keep your key combat triggers reliable.

Maximizing Death-Trigger Synergies

With high unit counts, your army will cycle through individual troops quickly during battle. The Big Deck Rework makes death-trigger items and relics especially potent because their effects stack rapidly as low-cost units fall.

Position your most fragile, low-cost units in the front ranks of your formation. Forcing these frontline units to take early damage starts a sacrifice cycle that constantly feeds combat bonuses to your durable backline units. Prioritize relics that award offensive or defensive stat boosts whenever an allied unit dies.

Managing Gold Upkeep and AoE Vulnerabilities

Maintaining a massive army introduces economic strain and tactical risks that can ruin a run if unmanaged.

Economic Balance

A wide board increases total gold upkeep costs. To prevent your army from exhausting your gold reserves, implement these structural checks:

Draft Economy Units: Prioritize units that provide passive gold generation or reduce overall unit upkeep costs.
Consolidate Board Space: Merge duplicate units whenever possible to preserve field space while retaining total stat value.
Manage Bench Reserves: Keep a small reserve of high-impact tactical units on your bench to swap in for specialized encounters without inflating active field upkeep.

Mitigating Area of Effect (AoE) Attacks

Board saturation leaves your army vulnerable to enemy AoE abilities, which can wipe out low-health troops in a single strike. Counter this vulnerability by prioritizing defensive relics that grant board-wide shields or flat damage reduction. Always retain a small anchor of high-health tank units in your formation to absorb heavy damage and prevent full wipeouts.