diff --git a/src/td/simulation/WorldTicker.cpp b/src/td/simulation/WorldTicker.cpp
index ae972a8..fcebd0d 100644
--- a/src/td/simulation/WorldTicker.cpp
+++ b/src/td/simulation/WorldTicker.cpp
@@ -41,6 +41,7 @@ WorldSnapshot WorldTicker::CreateNext(WorldSnapshot& a_PreviousState) {
 		.m_Teams = a_PreviousState.m_Teams
 	};
 	next.m_Mobs.reserve(a_PreviousState.m_Mobs.size());
+	// creating a "linked list" of mobs between steps
 	for (auto& mob : a_PreviousState.m_Mobs) {
 		game::MobPtr newMob = std::shared_ptr<game::Mob>(mobFactory.CreateMessage(mob->GetId()).release());
 		*newMob = *mob;