diff --git a/graph/src/main/scala/tf/bug/fancadegraph/Argument.scala b/graph/src/main/scala/tf/bug/fancadegraph/Argument.scala
index 438ddb2..fff9cb5 100644
--- a/graph/src/main/scala/tf/bug/fancadegraph/Argument.scala
+++ b/graph/src/main/scala/tf/bug/fancadegraph/Argument.scala
@@ -20,6 +20,11 @@ object Argument {
       fansc.Metadata.Number(pos, value)
     )
   }
+  implicit val booleanArg: Argument[Boolean] = new Argument[Boolean] {
+    override def encode(value: Boolean)(pos: fansc.Position): Vector[fansc.Metadata] = Vector(
+      fansc.Metadata.Bool(pos, value)
+    )
+  }
   implicit val soundOptionsArg: Argument[SoundOptions] = new Argument[SoundOptions] {
     override def encode(value: SoundOptions)(pos: fansc.Position): Vector[fansc.Metadata] = Vector(
       fansc.Metadata.Bool(pos, value.loop),
diff --git a/graph/src/main/scala/tf/bug/fancadegraph/BlockDefinition.scala b/graph/src/main/scala/tf/bug/fancadegraph/BlockDefinition.scala
index 78f8853..381f4c8 100644
--- a/graph/src/main/scala/tf/bug/fancadegraph/BlockDefinition.scala
+++ b/graph/src/main/scala/tf/bug/fancadegraph/BlockDefinition.scala
@@ -389,7 +389,7 @@ object BlockDefinition {
     override val ids: Vector[Obj] = Vector(Obj.archLower, Obj.archHigher)
   }
 
-  case object Win extends BuiltIn[Unit] {
+  case object Win extends BuiltIn[Boolean] {
     override val width: Int = 2
     override val height: Int = 1
     override val depth: Int = 2
@@ -415,7 +415,7 @@ object BlockDefinition {
     )
   }
 
-  case object Lose extends BuiltIn[Unit] {
+  case object Lose extends BuiltIn[Boolean] {
     override val width: Int = 2
     override val height: Int = 1
     override val depth: Int = 2
diff --git a/graph/src/main/scala/tf/bug/fancadegraph/Main.scala b/graph/src/main/scala/tf/bug/fancadegraph/Main.scala
index 8cb52cf..93c4d25 100644
--- a/graph/src/main/scala/tf/bug/fancadegraph/Main.scala
+++ b/graph/src/main/scala/tf/bug/fancadegraph/Main.scala
@@ -11,8 +11,8 @@ import tf.bug.fancadescodec.{Cartridge, Codecs, Position}
 object Main extends IOApp {
 
   override def run(args: List[String]): IO[ExitCode] = {
-    val winBlock = Block(Position(0, 0, 0), BlockDefinition.Win)
-    val loseBlock = Block(Position(0, 0, 3), BlockDefinition.Lose)
+    val winBlock = Block(Position(0, 0, 0), BlockDefinition.Win, true)
+    val loseBlock = Block(Position(0, 0, 3), BlockDefinition.Lose, true)
     val loseAfter = Pin(loseBlock, BlockDefinition.Lose.after)
     val winBefore = Pin(winBlock, BlockDefinition.Win.before)
     val level = Level(