diff --git a/tests/cases/cases.toml b/tests/cases/cases.toml
index 710bbffd..88ea4e3d 100644
--- a/tests/cases/cases.toml
+++ b/tests/cases/cases.toml
@@ -162,6 +162,7 @@ executor = "wasm"
 runner = "ubuntu-24.04"
 ci_group = "wasm"
 target = "wasm32-unknown-unknown"
+exclude = ["shared/test1.wave", "shared/test2.wave", "shared/test3.wave", "shared/test4.wave", "shared/test5.wave", "shared/test6.wave", "shared/test7.wave", "shared/test8.wave", "shared/test9.wave", "shared/test10.wave"]
 
 [[target]]
 id = "wasm-wasi"
@@ -171,6 +172,7 @@ executor = "wasm"
 runner = "ubuntu-24.04"
 ci_group = "wasm"
 target = "wasm32-wasip1"
+exclude = ["shared/test1.wave", "shared/test2.wave", "shared/test3.wave", "shared/test4.wave", "shared/test5.wave", "shared/test6.wave", "shared/test7.wave", "shared/test8.wave", "shared/test9.wave", "shared/test10.wave"]
 
 [[target]]
 id = "wasm64-unknown"
@@ -180,3 +182,4 @@ executor = "wasm"
 runner = "ubuntu-24.04"
 ci_group = "wasm"
 target = "wasm64-unknown-unknown"
+exclude = ["shared/test1.wave", "shared/test2.wave", "shared/test3.wave", "shared/test4.wave", "shared/test5.wave", "shared/test6.wave", "shared/test7.wave", "shared/test8.wave", "shared/test9.wave", "shared/test10.wave"]
diff --git a/tools/case_manifest.py b/tools/case_manifest.py
index 147e1f42..5cb2ec58 100644
--- a/tools/case_manifest.py
+++ b/tools/case_manifest.py
@@ -141,7 +141,7 @@ def sources(self):
     def runtime_sources(self, target_id: str):
         target = self.target(target_id)
         paths = []
-        for suite in (f"shared/{target.arch}", target.suite):
+        for suite in target.suites:
             directory = CASES_ROOT / suite
             entries = list(directory.glob("test*.wave"))
             entries.extend(directory.glob("test*/main.wave"))
diff --git a/tools/test_case_manifest.py b/tools/test_case_manifest.py
index 9b47d2fd..4ff95008 100644
--- a/tools/test_case_manifest.py
+++ b/tools/test_case_manifest.py
@@ -19,7 +19,9 @@
 from tools import case_manifest
 from tools.case_manifest import (
     MIN_CASES_PER_SUITE,
+    CaseManifest,
     CaseManifestError,
+    CaseTarget,
     _validate_case_layout,
     load_case_manifest,
 )
@@ -225,6 +227,82 @@ def test_manifest_accepts_non_ascii_utf8_comments(self):
             )
             self.assertEqual(load_case_manifest(manifest), self.manifest)
 
+    def test_runtime_sources_include_eligible_generic_shared_cases(self):
+        eligible = "fun main() {}\n"
+        included = (
+            "shared/test1.wave",
+            "shared/test10.wave",
+            "shared/amd64/test1.wave",
+            "linux/amd64/test3.wave",
+        )
+        omitted = {
+            "shared/test2.wave": "// wave-test: mode=check\nfun main() {}\n",
+            "shared/test3.wave": "// wave-test: runner=server\nfun main() {}\n",
+            "shared/test4.wave": "// wave-test: stdin=hello\nfun main() {}\n",
+            "shared/test5.wave": "// wave-test: udp-input=true\nfun main() {}\n",
+            "shared/test6.wave": "// wave-test: expected-exit=1\nfun main() {}\n",
+            "shared/test7.wave": eligible,
+        }
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            for relative in (*included, *omitted):
+                path = root / relative
+                path.parent.mkdir(parents=True, exist_ok=True)
+                path.write_text(omitted.get(relative, eligible), encoding="utf-8")
+
+            target = CaseTarget(
+                id="linux-amd64",
+                os="linux",
+                arch="amd64",
+                suite="linux/amd64",
+                status="supported",
+                enabled=True,
+                ci=True,
+                executor="native",
+                suites=("shared", "shared/amd64", "linux/amd64"),
+                exclude=("shared/test7.wave",),
+            )
+            manifest = CaseManifest(version=2, targets=(target,))
+            with patch.object(case_manifest, "CASES_ROOT", root):
+                sources = manifest.runtime_sources("linux-amd64")
+
+        self.assertEqual(sources, included)
+        self.assertEqual(len(sources), len(set(sources)))
+
+    def test_runtime_sources_respect_wasm_shared_exclusions(self):
+        eligible = "fun main() {}\n"
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            for relative in (
+                "shared/test1.wave",
+                "shared/wasm32/test1.wave",
+                "wasm/wasm32/test1.wave",
+            ):
+                path = root / relative
+                path.parent.mkdir(parents=True, exist_ok=True)
+                path.write_text(eligible, encoding="utf-8")
+
+            target = CaseTarget(
+                id="wasm-unknown",
+                os="wasm",
+                arch="wasm32",
+                suite="wasm/wasm32",
+                status="supported",
+                enabled=True,
+                ci=True,
+                executor="wasm",
+                suites=("shared", "shared/wasm32", "wasm/wasm32"),
+                exclude=("shared/test1.wave",),
+            )
+            manifest = CaseManifest(version=2, targets=(target,))
+            with patch.object(case_manifest, "CASES_ROOT", root):
+                sources = manifest.runtime_sources("wasm-unknown")
+
+        self.assertEqual(
+            sources,
+            ("shared/wasm32/test1.wave", "wasm/wasm32/test1.wave"),
+        )
+
     def test_invalid_utf8_manifest_reports_path_in_case_manifest_error(self):
         with tempfile.TemporaryDirectory() as temporary:
             manifest = Path(temporary) / "cases.toml"