diff --git a/.github/build.sh b/.github/build.sh
index a6360fdc1..a762d4203 100755
--- a/.github/build.sh
+++ b/.github/build.sh
@@ -23,6 +23,14 @@ if [ -z "${RELTYPECFG-}" ]; then
 	>&2 echo "RELTYPECFG not set"
 	exit 1
 fi
+if [ -z "${RELNAME-}" ]; then
+	>&2 echo "RELNAME not set"
+	exit 1
+fi
+if [ -z "${MOD_ID-}" ]; then
+	>&2 echo "MOD_ID not set"
+	exit 1
+fi
 
 if [ -z "${build_sh_init-}" ]; then
 	if [ $PLATFORM_SHORT == "win" ]; then
@@ -46,7 +54,8 @@ BUILD_INIT_BAT
 	exit 0
 fi
 
-other_flags=
+other_flags=$'\t-Dmod_id='
+other_flags+=$MOD_ID
 bin_suffix=
 static_flag=
 if [ $STATIC_DYNAMIC == "static" ]; then
@@ -68,6 +77,10 @@ if [ $PLATFORM_SHORT == "win" ]; then
 	bin_suffix=$bin_suffix.exe
 fi
 if echo $RELTYPECFG | base64 -d | grep snapshot; then
+	other_flags+=$'\t-Dsnapshot=true\t-Dsnapshot_id='
+	other_flags+=`echo $RELNAME | cut -d '-' -f 2`
+fi
+if echo $RELTYPECFG | base64 -d | grep snapshot || [ "$MOD_ID" != "0" ]; then
 	other_flags+=$'\t-Dupdate_server=starcatcher.us/TPT'
 fi
 meson -Dbuildtype=release -Db_pie=false -Db_staticpic=false -Db_lto=true $static_flag -Dinstall_check=true $other_flags `echo $RELTYPECFG | base64 -d` build
diff --git a/.github/get-type.py b/.github/get-type.py
index b763c5ae6..3f5742772 100644
--- a/.github/get-type.py
+++ b/.github/get-type.py
@@ -18,3 +18,6 @@ else:
 	print('::set-output name=TYPE::dev')
 	print('::set-output name=NAME::dev')
 	print('::set-output name=RELTYPECFG::%s' % base64.b64encode(('-Dignore_updates=true').encode('utf-8')).decode('utf-8'))
+
+with open('.github/mod_id.txt') as f:
+	print('::set-output name=MOD_ID::' + f.read())
diff --git a/.github/mod_id.txt b/.github/mod_id.txt
new file mode 100644
index 000000000..573541ac9
--- /dev/null
+++ b/.github/mod_id.txt
@@ -0,0 +1 @@
+0
diff --git a/.github/starcatcher-publish.sh b/.github/starcatcher-publish.sh
new file mode 100755
index 000000000..59c61313c
--- /dev/null
+++ b/.github/starcatcher-publish.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+cd "$STARCATCHER_PUBLISH_FILENAME"
+mv "$1" "$STARCATCHER_PUBLISH_FILENAME"
+LFTP_PASSWORD=$STARCATCHER_PUBLISH_PASSWORD lftp -c "open --user '$STARCATCHER_PUBLISH_USERNAME' --env-password -e 'set ftp:ssl-protect-data true; set ssl:verify-certificate false; put \"$STARCATCHER_PUBLISH_FILENAME\";' ftp://$STARCATCHER_PUBLISH_HOSTPORT"
diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 53feebff8..d2907c28e 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -49,6 +49,10 @@ jobs:
 # mingw-dynamic |     NO     |     NO     |     NO     |     NO     |     NO     |     NO     |
 #
 # [1] I don't currently care enough about mingw to figure out how to do this.
+# Please keep this matrix in sync with the other one in this file, see the ### blocks.
+#########################################################
+############# BEGIN BLOCK FOR COPYING BELOW #############
+#########################################################
         platform_short: [lin, mac, win]
         toolset_short: [gcc, msvc, mingw]
         machine_short: [x86_64, i686]
@@ -65,6 +69,9 @@ jobs:
             platform_short: mac
           - toolset_short: gcc
             platform_short: win
+#########################################################
+############## END BLOCK FOR COPYING BELOW ##############
+#########################################################
         include:
           - platform_short: lin
             os: ubuntu-latest
@@ -93,7 +100,7 @@ jobs:
       - if: matrix.platform_short == 'lin' && matrix.static_dynamic != 'static'
         run: sudo apt update && sudo apt install libluajit-5.1-dev libcurl4-openssl-dev libfftw3-dev zlib1g-dev libsdl2-dev
       - run: python -m pip install meson ninja
-      - run: bash -c 'PLATFORM_SHORT=${{ matrix.platform_short }} MACHINE_SHORT=${{ matrix.machine_short }} TOOLSET_SHORT=${{ matrix.toolset_short }} STATIC_DYNAMIC=${{ matrix.static_dynamic }} RELTYPECFG=${{ steps.get_type.outputs.RELTYPECFG }}  ./.github/build.sh'
+      - run: bash -c 'PLATFORM_SHORT=${{ matrix.platform_short }} MACHINE_SHORT=${{ matrix.machine_short }} TOOLSET_SHORT=${{ matrix.toolset_short }} STATIC_DYNAMIC=${{ matrix.static_dynamic }} RELTYPECFG=${{ steps.get_type.outputs.RELTYPECFG }} RELNAME=${{ steps.get_type.outputs.NAME }} MOD_ID=${{ steps.get_type.outputs.MOD_ID }} ./.github/build.sh'
       - uses: actions/upload-release-asset@v1
         if: steps.get_type.outputs.TYPE != 'dev' && matrix.static_dynamic == 'static'
         env:
@@ -104,7 +111,64 @@ jobs:
           asset_name: powder-${{ steps.get_type.outputs.NAME }}-${{ matrix.machine_short }}-${{ matrix.platform_short }}-${{ matrix.toolset_short }}-${{ matrix.static_dynamic }}${{ matrix.suffix }}
           asset_content_type: application/zip
       - uses: actions/upload-artifact@v2
-        if: steps.get_type.outputs.TYPE == 'dev' && matrix.static_dynamic == 'static'
+        if: matrix.static_dynamic == 'static'
         with:
           path: powder${{ matrix.suffix }}
           name: powder-${{ steps.get_type.outputs.NAME }}-${{ matrix.machine_short }}-${{ matrix.platform_short }}-${{ matrix.toolset_short }}-${{ matrix.static_dynamic }}${{ matrix.suffix }}
+  starcatcher-upload:
+    runs-on: ubuntu-latest
+    needs: [build]
+    if: startsWith(github.ref, 'refs/tags/') # not a perfect match but get-type.py takes care of this in job build
+    strategy:
+      matrix:
+#########################################################
+############# BEGIN BLOCK COPIED FROM ABOVE #############
+#########################################################
+        platform_short: [lin, mac, win]
+        toolset_short: [gcc, msvc, mingw]
+        machine_short: [x86_64, i686]
+        static_dynamic: [static, dynamic]
+        exclude:
+          - toolset_short: mingw
+          - machine_short: i686
+            platform_short: lin
+          - machine_short: i686
+            platform_short: mac
+          - toolset_short: msvc
+            platform_short: lin
+          - toolset_short: msvc
+            platform_short: mac
+          - toolset_short: gcc
+            platform_short: win
+#########################################################
+############## END BLOCK COPIED FROM ABOVE ##############
+#########################################################
+          - static_dynamic: dynamic
+        include:
+          - platform_short: lin
+            suffix: ''
+          - platform_short: mac
+            suffix: ''
+          - platform_short: win
+            suffix: '.exe'
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+      - id: get_type
+        run: python ./.github/get-type.py ${{ github.ref }}
+      - uses: actions/download-artifact@v1
+        with:
+          name: powder-${{ steps.get_type.outputs.NAME }}-${{ matrix.machine_short }}-${{ matrix.platform_short }}-${{ matrix.toolset_short }}-${{ matrix.static_dynamic }}${{ matrix.suffix }}
+      - run: sudo apt update && sudo apt install lftp
+      - if: steps.get_type.outputs.TYPE != 'dev' && matrix.static_dynamic == 'static'
+        run: bash -c 'STARCATCHER_PUBLISH_HOSTPORT=${{ secrets.STARCATCHER_PUBLISH_HOSTPORT }} STARCATCHER_PUBLISH_USERNAME=${{ secrets.STARCATCHER_PUBLISH_USERNAME }} STARCATCHER_PUBLISH_PASSWORD=${{ secrets.STARCATCHER_PUBLISH_PASSWORD }} STARCATCHER_PUBLISH_FILENAME=powder-${{ steps.get_type.outputs.NAME }}-${{ matrix.machine_short }}-${{ matrix.platform_short }}-${{ matrix.toolset_short }}-${{ matrix.static_dynamic }}${{ matrix.suffix }} ./.github/starcatcher-publish.sh powder${{ matrix.suffix }}'
+  starcatcher-release:
+    runs-on: ubuntu-latest
+    needs: [starcatcher-upload]
+    if: startsWith(github.ref, 'refs/tags/') # not a perfect match but get-type.py takes care of this in job build
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+      - id: get_type
+        run: python ./.github/get-type.py ${{ github.ref }}
+      - run: curl "https://starcatcher.us/TPT/perform-release.lua?mod=${{ steps.get_type.outputs.MOD_ID }}&type=${{ steps.get_type.outputs.TYPE }}&name=${{ steps.get_type.outputs.NAME }}"