Biofuel Bot
Carries crops to biofuel converters.
Keeps Biofuel Converters within 10 tiles of its station running: it takes a crop from stock and loads it into an empty slot, 1 crop (up to 3 with upgrades) per trip. Which crop is picked at random from what's in stock, berries included, but never one that converter already holds. After 4 trips it goes home to recharge.
Recharging takes 16 seconds at its station and costs biofuel: 1, plus 1 for each capacity upgrade and for every second speed upgrade. Speed upgrades take it from 1 to 2.6 tiles a second. Each upgrade costs more than the last, counted across all bots of its kind. Demolishing one takes its upgrades back off that count, so the next upgrade costs less.
- Achievements
Speed upgrades
| 1 (built) | 1 tile/s | — | — |
| 2 | 1.4 tiles/s |  226 |  9 |
| 3 | 1.8 tiles/s | 232 | 13 |
| 4 | 2.2 tiles/s | 243 | 20 |
| 5 | 2.6 tiles/s | 262 | 30 |
Capacity upgrades
| 1 (built) | 1 | — | — |
| 2 | 2 | 301 | 5 |
| 3 | 3 | 308 | 11 |
Price by purchase
| 1st | 310 | 5 |
| 2nd | 320 | 16 |
| 3rd | 410 | 60 |
| 5th | 1,200 | 290 |
| 10th | 17,000 | 3,200 |
| 20th | 292,000 | 36,000 |
History
Changes to this bot across game updates.