Spire Codex is now on Overwolf. Get the in-game overlay with live card lookups and one-click run uploads. Learn more →Spire Codex is now on Overwolf. Get the in-game overlay with live card lookups and one-click run uploads. Learn more →How the map is built — act structure, room counts, elite placement rules, and room distribution.
| Act | Rooms | Floors | Weak Fights |
|---|---|---|---|
| Overgrowth (Act 1) | 15 | 17 | 3 |
| Underdocks (Alt Act 1) | 15 | 17 | 3 |
| Hive (Act 2) | 14 | 16 | 2 |
| Glory (Act 3) | 13 | 15 | 2 |
Map is a 7-column grid. Rooms = choosable nodes, Floors = rooms + Ancient + boss. First row is always fights, 7 rows from the end is a guaranteed treasure room (or elite if replaced), last row is always a rest site.
| Type | Count | A1+ |
|---|---|---|
| Elites | 5 | 8 |
| Shops | 3 | 3 |
| Unknown (?) | 9-14 (varies by act) | (no change) |
| Rest sites | 5-7 (varies by act) | (no change) |
| Fights | Remaining slots | (no change) |
Unknown room count is per act: Act 1 (Overgrowth and Underdocks) rolls 10-14 (Gaussian, averages ~12), while Act 2 (Hive) and Act 3 (Glory) roll one fewer, 9-13 (averages ~11). Rest sites: 6-7 in Acts 1-2 (Overgrowth, Underdocks, Hive), 5-6 in Act 3 (Glory). Both the unknown and rest counts are rolled at map generation from per-act distributions and are independent of ascension level. No elites or rest sites in the first 5 rows.