diff --git a/src/brogue/Rogue.h b/src/brogue/Rogue.h
index 0be0d08d..8137abdb 100644
--- a/src/brogue/Rogue.h
+++ b/src/brogue/Rogue.h
@@ -2379,6 +2379,7 @@ typedef struct gameConstants {
     const int amuletLevel;                          // level on which the amulet appears (used in signed arithmetic)
 
     const int depthAccelerator;                     // factor for how fast depth-dependent features scale compared to usual 26-level dungeon
+    const int minimumAltarLevel;                    // how deep before resurrection and commutation altars can be generated
     const int minimumLavaLevel;                     // how deep before lava can be generated
     const int minimumBrimstoneLevel;                // how deep before brimstone can be generated
     const int mutationsOccurAboveLevel;                // how deep before monster mutations can be generated
diff --git a/src/brogue/SeedCatalog.c b/src/brogue/SeedCatalog.c
index 0aa8cc08..00d2f2ed 100644
--- a/src/brogue/SeedCatalog.c
+++ b/src/brogue/SeedCatalog.c
@@ -306,7 +306,7 @@ int printSeedCatalog(uint64_t startingSeed, uint64_t numberOfSeedsToScan, unsign
             printSeedCatalogFloorItems(isCsvFormat);
             printSeedCatalogMonsterItems(isCsvFormat);
             printSeedCatalogMonsters(isCsvFormat, false); // captives and allies only
-            if (rogue.depthLevel >= 13) { // resurrection & commutation altars can spawn starting on 13
+            if (rogue.depthLevel >= gameConst->minimumAltarLevel) {
                 printSeedCatalogAltars(isCsvFormat);
             }
         }
diff --git a/src/variants/GlobalsBrogue.c b/src/variants/GlobalsBrogue.c
index f15f1919..937ae8ff 100644
--- a/src/variants/GlobalsBrogue.c
+++ b/src/variants/GlobalsBrogue.c
@@ -1006,6 +1006,7 @@ const gameConstants brogueGameConst = {
     .amuletLevel = AMULET_LEVEL,
 
     .depthAccelerator = 1,
+    .minimumAltarLevel = 13,
     .minimumLavaLevel = 4,
     .minimumBrimstoneLevel = 17,
     .mutationsOccurAboveLevel = 10,
diff --git a/src/variants/GlobalsRapidBrogue.c b/src/variants/GlobalsRapidBrogue.c
index c540b091..1c9f8174 100644
--- a/src/variants/GlobalsRapidBrogue.c
+++ b/src/variants/GlobalsRapidBrogue.c
@@ -1009,6 +1009,7 @@ const gameConstants rapidBrogueGameConst = {
     .amuletLevel = AMULET_LEVEL,
 
     .depthAccelerator = 4,
+    .minimumAltarLevel = 4,
     .minimumLavaLevel = 2,
     .minimumBrimstoneLevel = 5,
     .mutationsOccurAboveLevel = 3,