Blueprints
If a blueprint has a valid spawn location on a floor (nearly all floors, this only excludes some boss arenas), there is a 20% chance that a blueprint will be selected to spawn.
After finding a blueprint, a cooldown of 4 floors is applied where blueprints cannot spawn, before returning to a 20% chance. (This currently appears to be working somewhat inconsistently, there have been reports of people finding blueprints within the cooldown window.)
Blueprints cannot spawn inside of secrets or traps.
Spawning Odds
This table shows the chance of finding a blueprint within a certain number of floors.
| Floors | Odds for Blueprint |
|---|---|
| 1 | 20.00% |
| 2 | 36.00% |
| 3 | 48.80% |
| 4 | 59.04% |
| 5 | 67.23% |
| 6 | 73.79% |
| 7 | 79.03% |
| 8 | 83.22% |
| 9 | 86.58% |
| 10 | 89.26% |
| 11 | 91.41% |
| 12 | 93.13% |
| 13 | 94.50% |
| 14 | 95.60% |
| 15 | 96.48% |
| 16 | 97.19% |
| 17 | 97.75% |