diff --git a/buildcfg.txt b/buildcfg.txt
index 05253cd5..cb2a003b 100644
--- a/buildcfg.txt
+++ b/buildcfg.txt
@@ -193,6 +193,8 @@ FREEDOOM
 #ifdef DOOM2
 
 DEMO1 = demo1_d2
+DEMO2 = demo2_d2
+DEMO3 = demo3_d2
 
 #else
 
@@ -205,7 +207,10 @@ DEMO3
 
 #ifdef ULTDOOM
 
-DEMO4
+DEMO1 = demo1_ud
+DEMO2 = demo2_ud
+DEMO3 = demo3_ud
+DEMO4 = demo4_ud
 
 #endif /* #ifdef ULTDOOM */
 
diff --git a/lumps/demo1_ud.lmp b/lumps/demo1_ud.lmp
new file mode 100644
index 00000000..47f5ff06
Binary files /dev/null and b/lumps/demo1_ud.lmp differ
diff --git a/lumps/demo2_d2.lmp b/lumps/demo2_d2.lmp
new file mode 100644
index 00000000..9218d322
Binary files /dev/null and b/lumps/demo2_d2.lmp differ
diff --git a/lumps/demo2_ud.lmp b/lumps/demo2_ud.lmp
new file mode 100644
index 00000000..cb2ad9e3
Binary files /dev/null and b/lumps/demo2_ud.lmp differ
diff --git a/lumps/demo3_d2.lmp b/lumps/demo3_d2.lmp
new file mode 100644
index 00000000..5ba556b7
Binary files /dev/null and b/lumps/demo3_d2.lmp differ
diff --git a/lumps/demo3_ud.lmp b/lumps/demo3_ud.lmp
new file mode 100644
index 00000000..f329de59
Binary files /dev/null and b/lumps/demo3_ud.lmp differ