Grandma’s Secret Tonic
Effect (verified): Critical hits have a 50% chance to explode, dealing 50% damage to nearby enemies.
First time here? Browse the full Megabonk item index for effects, unlocks, and builds.
🔓 How to Unlock
Kill 3,000 enemies with the Sniper Rifle.
- Farm lower-tier stages to stack clean headshots and safe multi-kills.
- Consider Precision Tome and Damage Tome for more reliable crits and faster clears.
🎯 Practical Tips & Synergies
- Pairs naturally with crit-heavy or precision weapons (e.g., Sniper Rifle) due to frequent critical hits.
- Great in dense waves: the splash helps clear packs when your main hit already deletes a priority target.
- Combine with tomes that raise consistency (Precision/Cooldown) rather than fragile glass-cannon trade-offs.
Want a crit-focused playstyle? Try the Revolver crit-headshot build for fundamentals that also translate to Sniper play.
🛠 Patch & Balance Context
Recent patches changed overall meta/performance (e.g., v1.0.12 swarm rework; v1.0.17 map & DX12). No official notes directly altering Grandma’s Secret Tonic were found as of Oct 31, 2025.
❓ FAQ
What exactly does Grandma’s Secret Tonic do?
On a critical hit, there is a 50% chance to create an explosion that deals 50% damage in a small area (verified across multiple sources).
How do I unlock it?
Accumulate 3,000 kills with the Sniper Rifle across runs; the corresponding achievement will pop and the item enters your pool.
Does “overcrit/overflow crit” affect its proc rate?
Community discussions suggest edge-case interactions, but this remains Unconfirmed. Use standard crit builds for consistency.
