diff --git a/modules/generative_grammar/grammar.cpp b/modules/generative_grammar/grammar.cpp
index a93c2b9727..cb764f644f 100644
--- a/modules/generative_grammar/grammar.cpp
+++ b/modules/generative_grammar/grammar.cpp
@@ -114,7 +114,7 @@ bool CompositeRule::try_apply(Ref<Sentence> sentence) {
 }
 
 bool RepeatRuleUntilFailure::try_apply(Ref<Sentence> sentence) {
-	while (!this->rules.get(0)->try_apply(sentence)) {
+	while (this->rules.get(0)->try_apply(sentence)) {
 	}
 	return true;
 }
@@ -127,17 +127,16 @@ void ReplaceRule::_bind_methods() {
 bool ReplaceRule::try_apply(Ref<Sentence> sentence) {
 	ERR_FAIL_COND_V_EDMSG(this->results.size() == 0, false, "ReplaceRule::try_apply failed, no results in list");
 	Vector2i max{ sentence->get_size() - this->pattern->get_size() };
-	bool any_success{ false };
 	for (Vector2i pos{ 0, 0 }; pos.y < max.y; ++pos.y) {
 		for (; pos.x < max.x; ++pos.x) {
 			if (sentence->check_match_at(pos, this->pattern)) {
-				any_success = true;
 				sentence->write_subsentence(pos, this->results[Math::rand() % this->results.size()].first); // TODO pick based on weighed random
+				return true;
 			}
 		}
 		pos.x = 0;
 	}
-	return any_success;
+	return false;
 }
 
 void ReplaceRule::set_results_dict(Dictionary dict) {
diff --git a/project/scenes/levels/dungeon.tscn b/project/scenes/levels/dungeon.tscn
index d7be2d220e..32697091f5 100644
--- a/project/scenes/levels/dungeon.tscn
+++ b/project/scenes/levels/dungeon.tscn
@@ -1,17 +1,27 @@
 [gd_scene format=3 uid="uid://cak2tf2adjv8j"]
 
 [sub_resource type="Sentence" id="Sentence_bb2w7"]
-size = Vector2i(10, 10)
-symbols_string = "BBBBBBBBBB
-BuuuuuuuuB
-BuuuuuuuuB
-BuuuuuuuuB
-BuuuuuuuuB
-BuuuuuuuuB
-BuuuuuuuuB
-BuuuuuuuuB
-BuuuuuuuuB
-BBBBBBBBBB"
+size = Vector2i(20, 20)
+symbols_string = "uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu
+uuuuuuuuuuuuuuuuuuuu"
 
 [sub_resource type="Sentence" id="Sentence_wail4"]
 size = Vector2i(3, 1)
@@ -25,15 +35,15 @@ symbols_string = "pxp"
 size = Vector2i(5, 5)
 symbols_string = "uuuuu
 uuuuu
-pxpxp
+xpxpx
 uuuuu
 uuuuu"
 
 [sub_resource type="Sentence" id="Sentence_yc5ro"]
 size = Vector2i(5, 5)
 symbols_string = "uuuuu
-uppxu
-pxupp
+upxpu
+xpupx
 uuuuu
 uuuuu"
 
@@ -41,8 +51,8 @@ uuuuu"
 size = Vector2i(5, 5)
 symbols_string = "uuuuu
 uuuuu
-pxupp
-uppxu
+xpupx
+upxpu
 uuuuu"
 
 [node name="Dungeon" type="Node3D" unique_id=719313039]