Holy Mole Update Reworks Upgrade Tree and Fixes Persistent Save Bugs

Developer sernna has pushed an update to Holy Mole that combines bug fixes with a meaningful redesign of how the upgrade tree is structured and priced.

What changed

Bug fixes

• Mole levels now persist when returning to the main menu — previously they reset entirely.
• Broken debris remains broken after returning to the main menu.

Upgrade tree

• Gem magnets have been reworked into coin magnets. The stated rationale: gems were already easy to collect; coins were not. Existing owners of those nodes automatically receive the coin-magnet behavior.
• Special Magnet cost reduced from 600,000 to 20,000, timed to align with when drills that produce gold and jade become available.
• Several cheaper upgrades added at the start of the Power, Speed, Economy, and Magnet branches to accelerate early-game progression.
• Money multipliers reworked.
• Backpack upgrades are no longer locked behind the expensive magnet chain; Backpack II is also cheaper.
• Nodes across the tree reordered so cheaper upgrades consistently appear first.

Other

• Moles level up faster, with higher levels now granting a much larger speed boost.

Taken together, the changes lower the cost barrier across most branches of the upgrade tree while fixing save-state bugs that were quietly erasing player progress between sessions.