diff --git a/.efrocachemap b/.efrocachemap
index 92480b38..931d963c 100644
--- a/.efrocachemap
+++ b/.efrocachemap
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diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a9c2084..16dc7767 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,6 @@
-### 1.7.8 (build 20870, api 7, 2022-09-20)
+### 1.7.8 (build 20871, api 7, 2022-09-21)
+- Fixed tournament scores submits which were broken in 1.7.7 (oops).
+- Added @clear command to stdin command reader.
 
 ### 1.7.7 (build 20868, api 7, 2022-09-20)
 - Added `ba.app.meta.load_exported_classes()` for loading classes discovered by the meta subsystem cleanly in a background thread.
diff --git a/assets/src/ba_data/python/ba/_bootstrap.py b/assets/src/ba_data/python/ba/_bootstrap.py
index 00dbf71e..60b83a49 100644
--- a/assets/src/ba_data/python/ba/_bootstrap.py
+++ b/assets/src/ba_data/python/ba/_bootstrap.py
@@ -45,7 +45,7 @@ def bootstrap() -> None:
 
     # Give a soft warning if we're being used with a different binary
     # version than we expect.
-    expected_build = 20870
+    expected_build = 20871
     running_build: int = env['build_number']
     if running_build != expected_build:
         print(
diff --git a/src/ballistica/ballistica.cc b/src/ballistica/ballistica.cc
index b651660b..0a8e2913 100644
--- a/src/ballistica/ballistica.cc
+++ b/src/ballistica/ballistica.cc
@@ -32,7 +32,7 @@
 namespace ballistica {
 
 // These are set automatically via script; don't modify them here.
-const int kAppBuildNumber = 20870;
+const int kAppBuildNumber = 20871;
 const char* kAppVersion = "1.7.8";
 
 // Our standalone globals.
diff --git a/src/ballistica/platform/stdio_console.cc b/src/ballistica/platform/stdio_console.cc
index 0ef6f190..fb1d9196 100644
--- a/src/ballistica/platform/stdio_console.cc
+++ b/src/ballistica/platform/stdio_console.cc
@@ -47,6 +47,23 @@ auto StdioConsole::OnAppStart() -> void {
       char buffer[4096];
       char* val = fgets(buffer, sizeof(buffer), stdin);
       if (val) {
+        if (val == std::string("@clear\n")) {
+          int retval{-1};
+#if BA_OSTYPE_MACOS || BA_OSTYPE_LINUX
+          // Attempt to run actual clear command on unix-y systems to
+          // plop our prompt back at the top of the screen.
+          retval = system("clear");
+#endif
+          // As a fallback, just spit out a bunch of newlines.
+          if (retval != 0) {
+            std::string space;
+            for (int i = 0; i < 100; ++i) {
+              space += "\n";
+            }
+            printf("%s", space.c_str());
+          }
+          continue;
+        }
         pending_input_ += val;
 
         if (!pending_input_.empty()
diff --git a/tools/efro/message/_protocol.py b/tools/efro/message/_protocol.py
index 5f3b0d80..b37f4284 100644
--- a/tools/efro/message/_protocol.py
+++ b/tools/efro/message/_protocol.py
@@ -81,13 +81,6 @@ class MessageProtocol:
         # if the user has not done so explicitly. Use unique negative
         # IDs which will never change or overlap with user ids.
         def _reg_sys(reg_tp: type[Response], reg_id: int) -> None:
-
-            # If we have a positive id registered already, we still point
-            # negative sys id at this type but not the opposite.
-            if reg_tp in self.response_ids_by_type:
-                self.response_types_by_id[reg_id] = reg_tp
-                return
-
             assert self.response_types_by_id.get(reg_id) is None
             self.response_types_by_id[reg_id] = reg_tp
             self.response_ids_by_type[reg_tp] = reg_id