Binding research: costs, timers and effect
Short answer
Binding research raises your horde cap, the most army slots your horde can hold.
What it does
Each level of Binding lets you keep more zombies. The cap counts slots: a Shambler is half a slot, so the same cap holds twice as many of them. It's researched at the Serum Lab and needs the Lab at the same level.
Residences add more room on top: 12 slots per level of each one, with no overall ceiling.
Levels and upgrade costs
| Level | Cost | Time | Serum Lab level | Effect |
|---|---|---|---|---|
| 1 | 40 scrap, 25 serum | 30 min | 1 | Horde cap 72 |
| 2 | 160 scrap, 300 serum | 3 h | 2 | Horde cap 84 |
| 3 | 480 scrap, 550 serum | 8 h | 3 | Horde cap 96 |
Tips
- Binding pairs with Pit upgrades, which bind faster and in bigger batches.
Questions
How much does Binding research cost?
Level 1 costs 40 scrap, 25 serum (30 min), level 2 costs 160 scrap, 300 serum (3 h) and level 3 costs 480 scrap, 550 serum (8 h). Each level needs the Serum Lab at that level.
Numbers come straight from the game's rules and update with every release.
