Adventure
Gloom-shroom
An upgraded mushroom that radiates toxic gloom in all 8 surrounding tiles continuously, dealing 40 damage per second to every zombie within its 3x3 area of influence.
Plant Stats
Sun Cost
150 Sun (plus Fume Shroom base)
Damage
40 per second
Attack Interval
Continuous
Range
3x3 Area (8 surrounding tiles)
Target
Ground Zombies
Toughness
400
Recharge
5 Seconds
Best Combo Plants
Details
Radiates toxic gloom in all 8 surrounding tiles (full 3x3 area minus center) continuously, dealing 40 damage per second to every zombie within range. Coverage overlaps with adjacent Gloom-shrooms for stacking damage in shared tiles. Works at night without Coffee Bean.
Gloom-shroom is the upgrade to Fume Shroom, expanding damage output to all 8 surrounding tiles simultaneously with 40 damage per second compared to Fume Shroom's single-row 20 DPS. This makes it the highest sustained area DPS plant in its cost bracket. In Survival Mode, a 2x2 cluster of Gloom-shrooms in the center of the grid creates an overlapping 3x3 coverage zone that covers the entire 5-lane grid with continuous toxic fumes. Pair with Garlic funneling to direct all zombie traffic into the Gloom-shroom cluster for maximum damage efficiency. In Endless Mode, Gloom-shroom is the backbone of top-tier survival builds. Protect it with Pumpkin shells since its 400 toughness is low. Always build the Fume Shroom first then upgrade.
Gloom-shroom is universally effective against any zombie that enters its 3x3 zone. The continuous 40 DPS melts high-toughness zombies faster than almost any other plant. It is the definitive counter to dense cluster rushes where multiple zombie types pack into the same tile range.
✓ Strengths
3x3 continuous coverage is the largest passive damage area of any standard plant
40 DPS is exceptional sustained output
Coverage overlaps with adjacent Gloom-shrooms for compounding damage
Works without Coffee Bean at night
Fume bypass mechanic carries over - shields and obstacles do not block gloom
✗ Weaknesses
400 toughness is critically low and requires Pumpkin shell protection
Cannot target aerial zombies
Requires Fume Shroom as a build step adding an extra sun investment
Fume immunity zombies negate the damage entirely
Needs Garlic funnel support to reach maximum efficiency
1
Always protect with Pumpkin shell before waves reach its position
2
Build a 2x2 Gloom-shroom cluster in the center grid for full-lane coverage
3
Pair with Garlic funneling from outer lanes to maximize the 3x3 zone occupancy
4
In Endless Mode, prioritize Gloom-shroom and Pumpkin as your core investment
5
Stack Fume Shroom upgrades in adjacent columns for overlapping coverage area
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