diff --git a/prometeu-studio/src/main/java/p/studio/execution/StudioPlayStopCoordinator.java b/prometeu-studio/src/main/java/p/studio/execution/StudioPlayStopCoordinator.java
index 762d7a1c..e4f0f99a 100644
--- a/prometeu-studio/src/main/java/p/studio/execution/StudioPlayStopCoordinator.java
+++ b/prometeu-studio/src/main/java/p/studio/execution/StudioPlayStopCoordinator.java
@@ -210,7 +210,7 @@ public final class StudioPlayStopCoordinator {
             executionSession.appendRuntimeLog(StudioExecutionLogSeverity.ERROR, "Runtime preflight failed: prometeuRuntimePath is missing.");
             return null;
         }
-        final Path runtimePath = Path.of(runtimePathValue).toAbsolutePath().normalize();
+        final Path runtimePath = Path.of(runtimePathValue).resolve("prometeu").toAbsolutePath().normalize();
         if (!Files.isRegularFile(runtimePath)) {
             executionSession.appendRuntimeLog(StudioExecutionLogSeverity.ERROR, "Runtime preflight failed: runtime not found at " + runtimePath + ".");
             return null;
diff --git a/prometeu-studio/src/main/java/p/studio/execution/runtime/StudioExternalRuntimeProcessLauncher.java b/prometeu-studio/src/main/java/p/studio/execution/runtime/StudioExternalRuntimeProcessLauncher.java
index d1a6ced1..afbf74be 100644
--- a/prometeu-studio/src/main/java/p/studio/execution/runtime/StudioExternalRuntimeProcessLauncher.java
+++ b/prometeu-studio/src/main/java/p/studio/execution/runtime/StudioExternalRuntimeProcessLauncher.java
@@ -11,7 +11,7 @@ public final class StudioExternalRuntimeProcessLauncher implements StudioRuntime
     public StudioRuntimeProcessHandle launch(
             final ProjectReference projectReference,
             final String runtimePath) throws IOException {
-        final Process process = new ProcessBuilder(runtimePath, "run", "build")
+        final Process process = new ProcessBuilder(runtimePath, "debug", "build")
                 .directory(projectReference.rootPath().toFile())
                 .start();
         return new ExternalProcessHandle(process);
diff --git a/prometeu-studio/src/main/java/p/studio/shipper/StudioShipperService.java b/prometeu-studio/src/main/java/p/studio/shipper/StudioShipperService.java
index cff8d285..97510c06 100644
--- a/prometeu-studio/src/main/java/p/studio/shipper/StudioShipperService.java
+++ b/prometeu-studio/src/main/java/p/studio/shipper/StudioShipperService.java
@@ -7,11 +7,7 @@ import com.fasterxml.jackson.databind.node.ObjectNode;
 import p.packer.PackerWorkspaceService;
 import p.packer.dtos.PackerDiagnosticDTO;
 import p.packer.dtos.PackerPackValidationAssetDTO;
-import p.packer.messages.PackWorkspaceRequest;
-import p.packer.messages.PackWorkspaceResult;
-import p.packer.messages.PackerOperationStatus;
-import p.packer.messages.ValidatePackWorkspaceRequest;
-import p.packer.messages.ValidatePackWorkspaceResult;
+import p.packer.messages.*;
 import p.studio.Container;
 import p.studio.compiler.messages.BuilderPipelineConfig;
 import p.studio.compiler.models.BuildResult;
@@ -162,7 +158,7 @@ public final class StudioShipperService {
         final Path manifestPath = buildRoot.resolve(MANIFEST_FILE);
         try {
             Files.createDirectories(buildRoot);
-            final ObjectNode manifest = createManifest(projectReference, buildResult, buildRoot);
+            final ObjectNode manifest = createManifest(projectReference, buildResult);
             MAPPER.writerWithDefaultPrettyPrinter().writeValue(manifestPath.toFile(), manifest);
             emit(logs, logSink, StudioShipperLogEntry.info(
                     StudioShipperLogSource.MANIFEST,
@@ -178,23 +174,15 @@ public final class StudioShipperService {
 
     private ObjectNode createManifest(
             final ProjectReference projectReference,
-            final BuildResult buildResult,
-            final Path buildRoot) throws IOException {
+            final BuildResult buildResult) throws IOException {
         final ObjectNode manifest = MAPPER.createObjectNode();
-        final JsonNode projectManifest = MAPPER.readTree(projectReference.rootPath().resolve(PROJECT_MANIFEST_FILE).toFile());
         manifest.put("magic", "PMTU");
         manifest.put("cartridge_version", 1);
         manifest.put("app_id", stableAppId(projectReference));
         manifest.put("title", projectReference.name());
         manifest.put("app_version", projectReference.version());
-        manifest.put("app_mode", "game");
+        manifest.put("app_mode", "Game");
         manifest.set("capabilities", capabilitiesNode(buildResult));
-        manifest.set("asset_table", readArrayOrEmpty(buildRoot.resolve(ASSET_TABLE_FILE)));
-        manifest.set("preload", readArrayOrEmpty(buildRoot.resolve(PRELOAD_FILE)));
-        if (projectManifest != null) {
-            putIfTextual(manifest, "project_name", projectManifest.get("name"));
-            putIfTextual(manifest, "language", projectManifest.get("language"));
-        }
         return manifest;
     }
 
diff --git a/test-projects/fragments/cartridge/manifest.json b/test-projects/fragments/cartridge/manifest.json
index 4f20a259..27a14cb3 100644
--- a/test-projects/fragments/cartridge/manifest.json
+++ b/test-projects/fragments/cartridge/manifest.json
@@ -5,6 +5,5 @@
   "title": "Fragments",
   "app_version": "0.1.0",
   "app_mode": "Game",
-  "entrypoint": "0",
   "capabilities": ["log", "gfx", "asset"]
 }
diff --git a/test-projects/main/cartridge/manifest.json b/test-projects/main/cartridge/manifest.json
index 901fe9e6..1a4994dd 100644
--- a/test-projects/main/cartridge/manifest.json
+++ b/test-projects/main/cartridge/manifest.json
@@ -5,6 +5,5 @@
   "title": "Main Test",
   "app_version": "0.1.0",
   "app_mode": "Game",
-  "entrypoint": "0",
   "capabilities": ["log", "gfx", "asset"]
 }
diff --git a/test-projects/main/cartridge/program.pbx b/test-projects/main/cartridge/program.pbx
index e55f4791..594130d5 100644
Binary files a/test-projects/main/cartridge/program.pbx and b/test-projects/main/cartridge/program.pbx differ
diff --git a/test-projects/main/run.sh b/test-projects/main/run.sh
index 3f792c15..df4ac3c5 100755
--- a/test-projects/main/run.sh
+++ b/test-projects/main/run.sh
@@ -2,6 +2,4 @@
 
 set -e
 
-cp build/assets.pa cartridge
-cp build/program.pbx cartridge
-./runtime/prometeu run cartridge
+./runtime/prometeu run build