SpongeHenge is an S-tier Secret rarity unit in SpongeBob Tower Defense on Roblox, best known for dealing heavy Full AoE (Area of Effect) jellyfish damage across wide map radiuses. Because of its one-unit placement limit and high damage per second (DPS), it serves as a central carry unit in Endless mode wave pushing.
SpongeHenge Overview and Base Stats
SpongeHenge fires continuous waves of jellyfish from within its stone monument structure, striking every enemy currently inside its attack circle. Unlike single-target or line-piercing towers, SpongeHenge deals 100% full AoE damage without damage falloff against packed crowds.
| Attribute | Base Value (Un-upgraded) | Level 30 (Secret Formula Trait) | Level 100 (5-Star Shiny Wombo) |
|---|---|---|---|
| Rarity | Secret | Secret | Secret |
| Attack Type | Full AoE | Full AoE | Full AoE |
| Placement Cost | 1,750 Cash | 1,750 Cash | 1,750 Cash |
| Placement Limit | 1 Unit | 1 Unit | 1 Unit |
| Base Damage | 8,250 (825 x 10 hits) | 18,576 | 95,760 to 100,000 |
| Base Attack Speed (SPA) | 1.8s (1.3s in base shop log) | 0.8s | 0.5s to 0.7s |
| Base Range | 16 (Up to 30 base listing) | 45 | 79.2 to 101.5 |
The unit gains a major statistical boost from variants:
- Shiny: Adds a visual sparkle and provides a 5% stat boost.
- Wombo: Enlarges the unit model and grants a 10% stat boost.
- Shiny Wombo: Delivers a combined 15% to 25% boost to raw damage and range while lowering attack cooldowns.
Upgrade Progression and Stat Scaling
Upgrading SpongeHenge in-game increases its damage output and expands its attack radius to cover key intersections and spawn points. When tested at Level 30 equipped with the Secret Formula trait, SpongeHenge progresses through the following upgrade path:
| Upgrade Stage | Total Damage | Attack Interval (SPA) | Attack Range | Calculated DPS |
|---|---|---|---|---|
| Base (Upgrade 0) | 18,576 | 0.8s | 45 | 23,220 |
| Upgrade 1 | 24,760 | 0.7s | 46.65 | 35,371 |
| Upgrade 2 | 27,864 | 0.7s | 48 | 39,805 |
| Upgrade 3 | 37,152 | 0.7s | 51 | 53,074 |
| Upgrade 4 | 43,344 | 0.7s | 52.5 | 61,920 |
| Max Upgrade (Upgrade 5) | 49,536 | 0.6s | 54 | 82,560 |
At maximum level (Level 100) with a 5-Star rating, Shiny Wombo variant, and top traits such as Neptune's Crown, max upgrade stats scale beyond 221,760 damage per hit at a 0.5-second cooldown and 93.6 to 101.5 range, generating over 443,000 raw DPS from a single placement.
How to Get SpongeHenge
Obtaining SpongeHenge depends on game updates and player trading channels.
- Prestige Cave Shop (Original Method): Players reach the Prestige Cave located past the kelp patch near spawn in the main lobby. Reaching Max Prestige (Prestige 10 / Prestige X) historically granted SpongeHenge alongside 55 Prestige Coins. In the Prestige Shop, a standard Shiny Wombo version cost 100 Prestige Tokens, while the 5-Star Shiny Wombo version cost 250 Prestige Tokens.
- Trading (Current Method): Official wiki records indicate SpongeHenge was removed from the direct Prestige Coin shop on February 7, 2026, replaced by the unit SpongeBoy. As an exclusive legacy Secret, SpongeHenge is primarily acquired by trading on the Flying Dutchman trading ship (unlocked at Level 15).
- Player Leveling Strat: To speed up Prestige grinding before entering the trade market, players repeatedly run Conch Street 1 Nightmare or Boss Battles with XP boosters enabled (2x Player XP Gamepass and 2x XP Potions) to clear Level 100 rank cycles quickly.
Best Traits and Team Compositions
SpongeHenge cannot carry deep Endless rounds alone due to late-game enemy speed scaling and high-HP bosses like the Giant Dirty Bubble.
Recommended Traits
- Secret Formula: Provides a consistent, flat percentage increase to raw damage output without increasing attack intervals.
- Sidekick: In certain builds, this trait raises placement limits by +1, allowing extra placement coverage.
Synergistic Endless Team Setup
Because players can only place one SpongeHenge, pairing it with complementary support and secondary carry towers produces the longest Endless runs:
- Dream Gary (Secret): Crucial slowing and sleep utility. Placing Dream Gary near track intersections keeps bosses inside SpongeHenge's AoE zone longer.
- Hash-Slinging Slasher (Secret): Provides rapid, concentrated single-target and multi-hit DPS (0.4s cooldown) to burn down priority targets that survive SpongeHenge's AoE.
- Dennis / Cyborg Plankton: High-DPS secondary damage dealers to burst through tanky targets like the Big Slow Anchovy.
- Mega Hydra Karen (Exotic): Large splash damage dealer with an active nuke ability dealing millions of instant map-wide damage.
- Krusty Krab / Barg'N-Mart: Economy starters essential for affording SpongeHenge's 1,750 base deployment and multi-tier upgrade costs early in a match.
SpongeHenge Performance in Endless Mode
Gameplay tests in Conch Street Endless Mode showcase how investment levels affect SpongeHenge's wave clear:
- Base Level 1 Solo: Defeats crowds cleanly through early boss waves, failing at Wave 252 against scaling Giant Dirty Bubble bosses.
- Base Level 1 Shiny Wombo Solo: Extended reach and 25% stat improvements push solo clear to Wave 280.
- Level 100 5-Star Shiny Wombo (Secret Formula) Solo: Map-wide range (101.5) eliminates incoming enemies at spawn, reaching Wave 420 solo with zero outside support.
- Endless Mode Level 30 Comparison: In head-to-head testing against Hash-Slinging Slasher on Conch Street Endless, a Level 30 Secret Formula SpongeHenge reached a tie at Wave 434, proving its viability among the top damage towers in the game.
Frequently Asked Questions
Can you place more than one SpongeHenge?
No. SpongeHenge has a strict placement limit of 1 unit per match. You must rely on support towers like Dream Gary or high-tier secondary DPS to assist it.
Is SpongeHenge better than Hash-Slinging Slasher?
Both fulfill different roles. Hash-Slinging Slasher has a faster base attack speed (0.4s vs 0.6s) and higher focused DPS against single bosses. SpongeHenge features superior full AoE coverage, making it better for clearing clustered mobs and spawn-camping incoming waves. In direct Level 30 Endless tests, both units reached Wave 434.
Can you still buy SpongeHenge in the Prestige Shop?
According to update documentation, SpongeHenge was rotated out of the Prestige Cave shop in February 2026 and replaced by SpongeBoy. Players looking to obtain SpongeHenge must trade for it with existing owners in the trading hub.
