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What the Reservoir does
Workers leave the Reservoir to extract Water Essence from cacti. Collect their output and preserve a walkable route to the next cactus. The Type Limit is two: place two Reservoirs to use both. Once every cactus is cleared, the Purifier gives these workers a continuing source of Water Essence.
Reservoir levels
| Level | Upgrade cost | Total Water Essence | Fountain level | Workers |
|---|---|---|---|---|
| 1 | 0 | 0 | None | 1 |
| 2 | 100 | 100 | 1 | 1 |
| 3 | 400 | 500 | 2 | 1 |
| 4 | 600 | 1100 | 2 | 2 |
| 5 | 1000 | 2100 | 4 | 2 |
| 6 | 1600 | 3700 | 4 | 2 |
| 7 | 2100 | 5800 | 5 | 2 |
| 8 | 3000 | 8800 | 5 | 2 |
| 9 | 4000 | 12800 | 6 | 2 |
| 10 | 5000 | 17800 | 6 | 2 |
Early upgrade decisions
- Level 4 increases workers from one to two. Use the table to see the Water Essence and Fountain requirements before buying another decoration.
- Do not block the Reservoir or its route to cacti with decorations.
- Reservoir upgrades spend Water Essence; ordinary decoration upgrades instead consume spare level-one copies.