Best Method to Farm Gems in SpongeBob Tower Defense (PC & Mobile)

Farming gems in SpongeBob Tower Defense is essential for unlocking upgrades, mythics, and other valuable resources. Whether you are playing on PC or mobile, this guide explains the most efficient methods to maximize your daily gem earnings. By combining several strategies, you can achieve over 100,000 gems per day if you play smart and use the in-game mechanics to your advantage.

Method 1: Endless Mode Grinding

Endless Mode Grinding is a reliable method that can yield between 21,000 and 42,000 gems per day with proper execution and a 2x Gem Boost.

Requirements

• A well-equipped team with high-tier units (such as Pearl, Mythics, King Neptune, Hibernation Sandy, and Mermaid Man)
• Auto-Skip enabled
• 2x Speed setting

Steps

1. Team Setup:
   Build a team centered around high-damage units. Equip Pearl with upgrades like Secret Formula or Vortex enchantments to ensure optimal performance.

2. Unit Placement:
   Place your units close to the enemy spawn points. Clustering units maximizes the area of effect and increases the number of enemies defeated.

3. Wave Progression:
   Enable Auto-Skip and set the game to 2x Speed. This accelerates wave progression, reducing the time spent per run.

4. Upgrade Focus:
   Prioritize upgrading area-of-effect attackers to full capacity by Wave 100–150. This is critical for handling the enemy waves efficiently.

5. Sell and Reset:
   Once you reach Wave 150, sell all your units to secure the maximum gem rewards before the run ends.

Calculations

• A typical run lasts about 44 minutes, yielding roughly 648 gems per run.
• In a full day (1,440 minutes), you can complete approximately 32 runs, totaling around 21,000 gems.
• With a 2x Gem Boost, the earnings can double to approximately 42,000 gems.

Method 2: AFK Rock Passive Rewards

The AFK Rock provides a steady, hands-off method to gather gems. Although the yield is lower than active modes, it adds up throughout the day.

Requirements

• Ability to check and claim rewards every 5 minutes

Steps

1. Access the AFK Rock:
   From the game’s lobby, visit the AFK Rock to claim your rewards.

2. Claim Rewards Frequently:
   Every 5 minutes, claim the available reward (typically 25 gems, with a one in three chance of receiving it).

3. Repeat Consistently:
   Make sure to claim these rewards throughout the day to maximize the total gem count.

Calculations

• In a 1,440-minute day, there are 288 five-minute intervals.
• With a 1 in 3 chance, you receive roughly 96 gem rewards, totaling about 2,400 gems.
• With a 2x Gem Boost, this method yields approximately 4,800 gems per day.

Method 3: Nightmare Mode Macro Farming

Nightmare Mode Macro Farming offers a high-yield method, ideal for players who have unlocked Nightmare Mode and can set up automation tools.

Requirements

• Completion of Hard Mode to unlock Nightmare Mode
• Pearl unit (preferably level 10 or higher)
• Optional auto-clicker or macro tool for automation

Steps

1. Select the Stage:
   Play Conch 1 Act 1 in Nightmare Mode for optimal gem rewards.

2. Unit Placement:
   Place four Pearls near the spawn point to cover the area effectively.

3. Upgrade Evenly:
   Upgrade all Pearls gradually from Level 1 to Level 4, ensuring balanced performance.

4. Set Auto-Win Conditions:
   Exit the run after reaching Wave 15, which should yield approximately 70 gems in around 2.5 minutes.

5. Macro Setup (Optional):
   Use automation tools to record and repeat your placement and upgrade actions, maximizing the number of runs you can complete in a day.

Calculations

• Each run takes about 2.5 minutes, allowing for roughly 576 runs per day.
• Multiplying 576 runs by 70 gems per run results in approximately 40,320 gems.
• With a 2x Boost, this number can reach around 80,640 gems per day.

Total Daily Gem Calculation

By combining the methods and bonus sources, here is an approximate breakdown of daily gem earnings:

• Endless Mode Grinding (with 2x Boost): 42,000 gems
• AFK Rock Rewards (with 2x Boost): 4,800 gems
• Nightmare Mode Macro Farming (with 2x Boost): 80,640 gems
• Bonus Sources (with 2x Boost): 22,600 gems

Total: Approximately 150,000 gems per day, providing ample resources for upgrades and progression.

For both PC and mobile players, these methods offer efficient ways to farm a significant number of gems in SpongeBob Tower Defense. Whether you prefer active grinding with Endless Mode, passive collection via the AFK Rock, or high-yield runs in Nightmare Mode, mastering these techniques will enable you to unlock upgrades and mythic units faster. Optimize your play style, monitor your progress, and enjoy dominating the gem economy in SpongeBob Tower Defense.