diff --git a/indoor/altars/altardevo.arc b/indoor/altars/altardevo.arc
index 5a6966c28..24a291a9f 100644
--- a/indoor/altars/altardevo.arc
+++ b/indoor/altars/altardevo.arc
@@ -1,12 +1,10 @@
 Object altar_devourers
 name Altar of Devourers
-title Devourers
-slaying food
-type 18
+type 56
+level 100
+other_arch Devourers
 face altardevo.111
-food 10
 no_pick 1
-walk_on 1
 immune 1
 editable 48
 visibility 50
diff --git a/indoor/altars/altargaea.arc b/indoor/altars/altargaea.arc
index 26f9e08cb..f0a3763d4 100644
--- a/indoor/altars/altargaea.arc
+++ b/indoor/altars/altargaea.arc
@@ -1,13 +1,10 @@
 Object altar_gaea
 name Altar of Gaea
-title Gaea
-slaying food
-type 18
+other_arch Gaea
+type 56
+level 100
 face altargaea.111
-food 10
 no_pick 1
-walk_on 1
-immune 1
 editable 48
 visibility 50
 magicmap grey
diff --git a/indoor/altars/altargnarg.arc b/indoor/altars/altargnarg.arc
index 9c01733ba..e9c951a8e 100644
--- a/indoor/altars/altargnarg.arc
+++ b/indoor/altars/altargnarg.arc
@@ -1,13 +1,10 @@
 Object altar_gnarg
 name Altar of Gnarg
-title Gnarg
-slaying food
-type 18
+other_arch Gnarg
+type 56
 face altargnarg.111
-food 10
 no_pick 1
-walk_on 1
-immune 1
+level 100
 editable 48
 visibility 50
 magicmap grey
diff --git a/indoor/altars/altargoro.arc b/indoor/altars/altargoro.arc
index 848f70b83..1310b580d 100644
--- a/indoor/altars/altargoro.arc
+++ b/indoor/altars/altargoro.arc
@@ -1,13 +1,10 @@
 Object altar_gorokh
 name Altar of Gorokh
-title Gorokh
-slaying food
-type 18
+other_arch Gorokh
+type 56
 face altargoro.111
-food 10
 no_pick 1
-walk_on 1
-immune 1
+level 100
 editable 48
 visibility 50
 magicmap grey
diff --git a/indoor/altars/altarlyth.arc b/indoor/altars/altarlyth.arc
index b262c8071..8aaf40e70 100644
--- a/indoor/altars/altarlyth.arc
+++ b/indoor/altars/altarlyth.arc
@@ -1,13 +1,10 @@
 Object altar_lythander
 name Altar of Lythander
-title Lythander
-slaying food
-type 18
+other_arch Lythander
+type 56
+level 100
 face altarlyth.111
-food 10
 no_pick 1
-walk_on 1
-immune 1
 editable 48
 visibility 50
 magicmap grey
diff --git a/indoor/altars/altarmostr.arc b/indoor/altars/altarmostr.arc
index 229e763d5..b3151dd80 100644
--- a/indoor/altars/altarmostr.arc
+++ b/indoor/altars/altarmostr.arc
@@ -1,13 +1,10 @@
 Object altar_mostrai
 name Altar of Mostrai
-title Mostrai
-slaying food
-type 18
+other_arch Mostrai
+type 56
+level 100
 face altarmostr.111
-food 10
 no_pick 1
-walk_on 1
-immune 1
 editable 48
 visibility 50
 magicmap grey
diff --git a/indoor/altars/altarnone.arc b/indoor/altars/altarnone.arc
index 0263ace47..29f481d8f 100644
--- a/indoor/altars/altarnone.arc
+++ b/indoor/altars/altarnone.arc
@@ -1,11 +1,8 @@
 Object altar_none
 name altar
-slaying food
-type 18
+type 56
 face altarnone.111
-food 10
 no_pick 1
-walk_on 1
 editable 48
 visibility 50
 magicmap grey
diff --git a/indoor/altars/altarrugg.arc b/indoor/altars/altarrugg.arc
index 5725b3413..60d6ec22a 100644
--- a/indoor/altars/altarrugg.arc
+++ b/indoor/altars/altarrugg.arc
@@ -1,13 +1,10 @@
 Object altar_ruggilli
 name Altar of Ruggilli
-title Ruggilli
-slaying food
-type 18
+other_arch Ruggilli
+type 56
+level 100
 face altarrugg.111
-food 10
 no_pick 1
-walk_on 1
-immune 1
 editable 48
 visibility 50
 magicmap grey
diff --git a/indoor/altars/altarsori.arc b/indoor/altars/altarsori.arc
index 4c205b932..239020a50 100644
--- a/indoor/altars/altarsori.arc
+++ b/indoor/altars/altarsori.arc
@@ -1,13 +1,10 @@
 Object altar_sorig
 name Altar of Sorig
-title Sorig
-slaying food
-type 18
+other_arch Sorig
+type 56
+level 100
 face altarsori.111
-food 10
 no_pick 1
-walk_on 1
-immune 1
 editable 48
 visibility 50
 magicmap grey
diff --git a/indoor/altars/altarvalr.arc b/indoor/altars/altarvalr.arc
index 02eb7f878..aa8071c8d 100644
--- a/indoor/altars/altarvalr.arc
+++ b/indoor/altars/altarvalr.arc
@@ -1,12 +1,10 @@
 Object altar_valriel
 name Altar of Valriel
-title Valriel
-slaying food
-type 18
+other_arch Valriel
+type 56
+level 100
 face altarvalr.111
-food 10
 no_pick 1
-walk_on 1
 immune 1
 editable 48
 visibility 50