diff --git a/buildcfg.txt b/buildcfg.txt
index 06e2661d..ce000985 100644
--- a/buildcfg.txt
+++ b/buildcfg.txt
@@ -172,7 +172,6 @@ DMXGUS
 DEMO1 = demo1_dm
 DEMO2 = demo2_dm
 DEMO3 = demo3_dm
-DEMO4 = demo4_dm
 #else
 DEMO1 = demo1_p2
 DEMO2 = demo2_p2
diff --git a/lumps/README.DEMO b/lumps/README.DEMO
index 885f4f38..b92d649f 100644
--- a/lumps/README.DEMO
+++ b/lumps/README.DEMO
@@ -8,21 +8,25 @@ Freedoom.
 FreeDM is exempted since it is not intended to be a single-player
 game.
 
+For each demo the "by" refers to the creator of the demo, not the
+corresponding level. The version at the end of each demo line is the
+version when the demo was first released.
+
 Current demos recorded:
+
 Phase 1:
-DEMO1: C1M4 single-player by Erick - v0.12
-DEMO2: C2M3 single-player by Erick - v0.12
-DEMO3: C3M3 single-player by Chungy - v0.12
-DEMO4: C4M6 single-player by Erick - v0.12
+DEMO1: E1M4 single-player by Erick - v0.12
+DEMO2: E2M3 single-player by Steven Elliott - v0.13.0
+DEMO3: E3M3 single-player by Steven Elliott - v0.13.0
+DEMO4: E4M6 single-player by Erick - v0.12
 
 Phase 2:
-DEMO1: MAP15 single-player by Erick - v0.12
-DEMO2: MAP10 single-player by Erick - v0.12
-DEMO3: MAP02 single-player by Obsidian Plague - v0.12
-DEMO4: MAP26 single-player by Chungy - v0.12
+DEMO1: MAP06 single-player by Catoptromancy - v0.13.0
+DEMO2: MAP11 single-player by Catoptromancy - v0.13.0
+DEMO3: MAP16 single-player by Catoptromancy - v0.13.0
+DEMO4: MAP21 single-player by Catoptromancy - v0.13.0
 
 FreeDM:
 DEMO1: DM21 by Xindage, Chungy, Erick, and Xer - v0.12
 DEMO2: DM06 by Chungy, Xindage, and Erick - v0.12
 DEMO3: DM18 by Chungy, Xindage, and Erick - v0.12
-DEMO4: DM09 by Chungy, Xindage, and Erick - v0.12
diff --git a/lumps/demo1_p2.lmp b/lumps/demo1_p2.lmp
index 78ff4d83..44e8f3b5 100644
Binary files a/lumps/demo1_p2.lmp and b/lumps/demo1_p2.lmp differ
diff --git a/lumps/demo2_p1.lmp b/lumps/demo2_p1.lmp
index bc7840a9..e6defe1d 100644
Binary files a/lumps/demo2_p1.lmp and b/lumps/demo2_p1.lmp differ
diff --git a/lumps/demo2_p2.lmp b/lumps/demo2_p2.lmp
index 34017238..0cf27db3 100644
Binary files a/lumps/demo2_p2.lmp and b/lumps/demo2_p2.lmp differ
diff --git a/lumps/demo3_p1.lmp b/lumps/demo3_p1.lmp
index f616c0f7..29f9c9a0 100644
Binary files a/lumps/demo3_p1.lmp and b/lumps/demo3_p1.lmp differ
diff --git a/lumps/demo3_p2.lmp b/lumps/demo3_p2.lmp
index adfe0a85..b6c5ddcf 100644
Binary files a/lumps/demo3_p2.lmp and b/lumps/demo3_p2.lmp differ
diff --git a/lumps/demo4_dm.lmp b/lumps/demo4_dm.lmp
deleted file mode 100644
index 8a94c97b..00000000
Binary files a/lumps/demo4_dm.lmp and /dev/null differ
diff --git a/lumps/demo4_p2.lmp b/lumps/demo4_p2.lmp
index c2025b59..89de0ed3 100644
Binary files a/lumps/demo4_p2.lmp and b/lumps/demo4_p2.lmp differ