Quick answer
Buy the Hypno-device from Gunter's shop in the Main Port (50 copper).[1] Charge it at a Formulation Bench: 1 Hypno-device + 1 Faith = 1 Charged Hypno-device, Anatomy mastery 2.[2] Give one to Gunter for the Congregation Trouble quest; after that, charged devices feed the PR Machine that raises your zombie limit.[2][3]
Before you can buy it
Gunter's shop only opens after some Port progress. Game Rant's route:[1]
- Liberate the Main Port in the story.
- Help Gunter get his tarot cards back from Linda, which means rebuilding a store with 4 Building Kits, 3 Wooden Kits and 1 Iron Kit, plus getting paint.
- Gunter's stock then includes the Hypno-device for 50 copper.
(Buying other items from Gunter works the same way; see Buy Blue Crystals from Gunter for the trade screen.)
Charging it
| Detail | |
|---|---|
| Station | Formulation Bench (tower Alchemy Lab or Writing Basement)[2][4] |
| Recipe | 1 Hypno-device + 1 Faith → 1 Charged Hypno-device[2] |
| Mastery | Anatomy 2[2] |
| Time and energy | 4 ticks, 2 energy per tick[2] |
| Recipe unlock | Given during Congregation Trouble[2] |
| Bonus | 50% chance of an extra device when an Alchemist zombie works the bench; +3 blue tech points per craft[2] |
No Formulation Bench yet? It needs Church Lighting I in the Theology tree. See the Formulation Bench guide.[4] No Faith yet? See how to get Faith.
What charged devices are for
1. Congregation Trouble
The quest takes 1 Charged Hypno-device.[2] Charge a device, give it back to Gunter and hold the test sermon; completing it gives you the PR Machine for your home area.[3]
2. The PR Machine (zombie limit)
On Gluttony day you can load the PR Machine to raise your zombie limit for a few weeks.[3][5]
| Program | Charged Hypno-devices | Newspapers | Limit bonus | Lasts |
|---|---|---|---|---|
| +10 program | 2 | none | +10 | 1 week |
| +20 program | 3 | 10 (any grade) | +20 | 2 weeks |
| +30 program | 5 | 20 (silver or gold) | +30 | 3 weeks |
Program inputs, bonuses and durations are from Wikily's PR Machine data.[2][6] Full details, including the newspaper-only +50 and +80 programs, are on the zombie limit page.
Cost per week, worked out: the +10 program costs 2 charged devices (2 Faith) for one week; the +30 program costs 5 devices (5 Faith) for three weeks. If you run a big zombie workforce, the higher programs are cheaper per week in devices, but they also need newspapers.
Good to know
- Charged Hypno-devices stack to 20.[2]
- Studying one at the Study Table costs 15 Science and gives 10 red and 40 blue tech points, which is a lot of blue for one item.[2]
Related guides
Sources & References
- How to Charge Hypno Devices for Gunter in Graveyard Keeper 2, Game Rant (Marc Santos) ↩ 1, 2
- Charged hypno-device: recipe, uses and tech points, Wikily ↩ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
- Zombie Limit and PR Machine, Graveyard Keeper 2 Wiki (Fextralife) ↩ 1, 2, 3
- Formulation Bench, Graveyard Keeper 2 Wiki (Fextralife) ↩ 1, 2
- The six-day week: daily events and unlock quests, Wikily ↩
- PR Machine V: recipes and tiers, Wikily ↩