diff --git a/examples/custom-renderer/Renderer.zig b/examples/custom-renderer/Renderer.zig
index 1cd87568..7ea8ea62 100644
--- a/examples/custom-renderer/Renderer.zig
+++ b/examples/custom-renderer/Renderer.zig
@@ -1,4 +1,5 @@
 // TODO(important): docs
+// TODO(important): review all code in this file in-depth
 const std = @import("std");
 
 const mach = @import("mach");
diff --git a/examples/glyphs/Game.zig b/examples/glyphs/Game.zig
index 3cfcc165..fd6d4e84 100644
--- a/examples/glyphs/Game.zig
+++ b/examples/glyphs/Game.zig
@@ -1,3 +1,4 @@
+// TODO(important): review all code in this file in-depth
 const std = @import("std");
 const mach = @import("mach");
 const core = mach.core;
diff --git a/examples/glyphs/Text.zig b/examples/glyphs/Text.zig
index df8b3261..7d5e73cd 100644
--- a/examples/glyphs/Text.zig
+++ b/examples/glyphs/Text.zig
@@ -1,3 +1,4 @@
+// TODO(important): review all code in this file in-depth
 const mach = @import("mach");
 const gpu = mach.gpu;
 const ecs = mach.ecs;
diff --git a/examples/glyphs/main.zig b/examples/glyphs/main.zig
index d2d7e1d3..43925255 100644
--- a/examples/glyphs/main.zig
+++ b/examples/glyphs/main.zig
@@ -1,3 +1,5 @@
+// TODO(important): review all code in this file in-depth
+
 // Experimental ECS app example. Not yet ready for actual use.
 const mach = @import("mach");
 
diff --git a/examples/sprite/Game.zig b/examples/sprite/Game.zig
index ade4229c..58b525b2 100644
--- a/examples/sprite/Game.zig
+++ b/examples/sprite/Game.zig
@@ -1,3 +1,4 @@
+// TODO(important): review all code in this file in-depth
 const std = @import("std");
 const zigimg = @import("zigimg");
 const assets = @import("assets");
diff --git a/examples/sprite/main.zig b/examples/sprite/main.zig
index 45bed864..77757bca 100644
--- a/examples/sprite/main.zig
+++ b/examples/sprite/main.zig
@@ -1,3 +1,5 @@
+// TODO(important): review all code in this file in-depth
+
 // Experimental ECS app example. Not yet ready for actual use.
 const mach = @import("mach");
 
diff --git a/examples/text/Game.zig b/examples/text/Game.zig
index 6f238500..f9f5528d 100644
--- a/examples/text/Game.zig
+++ b/examples/text/Game.zig
@@ -1,3 +1,4 @@
+// TODO(important): review all code in this file in-depth
 const std = @import("std");
 const zigimg = @import("zigimg");
 const assets = @import("assets");
diff --git a/examples/text/main.zig b/examples/text/main.zig
index 94f6511c..8c1f912e 100644
--- a/examples/text/main.zig
+++ b/examples/text/main.zig
@@ -1,3 +1,5 @@
+// TODO(important): review all code in this file in-depth
+
 // Experimental ECS app example. Not yet ready for actual use.
 const mach = @import("mach");