Mech Assemble: Zombie Swarm is an upcoming roguelike bullet hell game with gacha elements, where you control powerful mechs to survive waves of zombies. Each mech comes with unique abilities, from wide-area lasers to devastating AoE attacks, and choosing the right one can be the difference between victory and defeat.
The game is set to release later this year, giving players plenty of time to plan their strategy. In this guide, we’ve ranked all mechs from the most powerful to the least effective, so you’ll know which ones to invest your resources in and which ones to leave behind.
Mech Assemble: Zombie Swarm Tier List
S Tier – Overpowered
These mechs can carry you through the entire game with minimal effort thanks to their top-tier stats and abilities.
- Crimson Phantom – 20% chance to summon a Demon Bot after killing an enemy, strong explosive AoE attacks.
- Shadow Warrior – Shuriken has a 5% chance to trigger Spike, great for clearing hordes.
- Future Warrior – Fires a wide-area laser every 60 seconds, perfect for tough bosses.
- Goddess of War – Gains +10% attack, Lightning Shield triggers Thunder Burst.
- Fire Judgement – 10% chance to fire 6 Judgement Cannons, massive AoE potential.
A Tier – Strong Choices
Solid performers with good abilities, but not as overpowering as S tier.
- Fire Dragon – +100% fire damage, great AoE skills.
- Flamefeather Archer – Fast attacks, huge damage but low HP and costly upgrades.
- Pirate Gunner – Anchor generates Whirlpools, +200 defense.
- Thunderous Judgment – +10% attack, chance to fire Thunder Spear on kill.
B Tier – Reliable with Upgrades
Can work well with enough investment and gear.
- War Machine – +25% crit and EM Coil rate, fast fire rate but low HP.
- Thunder Beast – Orbiting Thunder Missiles, heavy armor, rapid fire.
- Thunderhorn Guard – High AoE, EM Coil every 6 attacks, Battle Pass exclusive.
C Tier – Situational Picks
Have some positives, but weaknesses make them harder to use long-term.
- Rally Wrecker – Good vs. hordes, but low HP and upgrade-dependent.
- Frost Scorpion – Bonus HP passive, but low damage and Drill-reliant.
D Tier – Avoid These
Poor performance, scaling, or survivability makes them not worth your time.
- Awakening – Starting mech, weak late game.
- Doomsday Tank – Low HP and damage fall-off.
With Mech Assemble: Zombie Swarm launching later this year, knowing which mechs are worth building will give you a huge advantage when the zombie outbreak hits. Whether you aim for the devastating firepower of S-tier units or settle for reliable mid-tier options, making smart investments early will help you survive longer and clear tougher stages.