diff --git a/TODO.md b/TODO.md
index fc0b201..264b5c9 100644
--- a/TODO.md
+++ b/TODO.md
@@ -149,3 +149,8 @@ Mars Surface levels should have ambient floating particles (dust motes, fine
 sand) drifting across the screen to sell the atmosphere. Could tie into the
 existing wind system — particles drift with the wind direction. Should be
 subtle, low-alpha, and layered behind/in front of the player for depth.
+
+## Skip spacecraft transition for non-surface levels
+The spacecraft fly-in animation should only play on surface levels (moon01,
+mars01, etc.). Interior/base levels (mars02, mars03, generated mars_base,
+generated station) should skip it — the player is already indoors.