diff --git a/assets/config/actor.ron b/assets/config/actor.ron
index 0e11d06..b2958f2 100644
--- a/assets/config/actor.ron
+++ b/assets/config/actor.ron
@@ -11,8 +11,8 @@
             ),
             sprite_animation: SpriteAnimation(
                 frames: [
-                    SpriteAnimationFrame(index: 0, beats: 1),
-                    SpriteAnimationFrame(index: 1, beats: 1),
+                    SpriteAnimationFrame(index: 0, beats: 16),
+                    SpriteAnimationFrame(index: 1, beats: 16),
                 ],
             ),
 
@@ -48,8 +48,8 @@
             ),
             sprite_animation: SpriteAnimation(
                 frames: [
-                    SpriteAnimationFrame(index: 0, beats: 1),
-                    SpriteAnimationFrame(index: 1, beats: 1),
+                    SpriteAnimationFrame(index: 0, beats: 16),
+                    SpriteAnimationFrame(index: 1, beats: 16),
                 ],
             ),
 
@@ -72,8 +72,8 @@
             ),
             sprite_animation: SpriteAnimation(
                 frames: [
-                    SpriteAnimationFrame(index: 0, beats: 1),
-                    SpriteAnimationFrame(index: 1, beats: 1),
+                    SpriteAnimationFrame(index: 0, beats: 16),
+                    SpriteAnimationFrame(index: 1, beats: 16),
                 ],
             ),
 
@@ -96,8 +96,8 @@
             ),
             sprite_animation: SpriteAnimation(
                 frames: [
-                    SpriteAnimationFrame(index: 0, beats: 1),
-                    SpriteAnimationFrame(index: 1, beats: 1),
+                    SpriteAnimationFrame(index: 0, beats: 16),
+                    SpriteAnimationFrame(index: 1, beats: 16),
                 ],
             ),
 
@@ -120,8 +120,8 @@
             ),
             sprite_animation: SpriteAnimation(
                 frames: [
-                    SpriteAnimationFrame(index: 0, beats: 1),
-                    SpriteAnimationFrame(index: 1, beats: 1),
+                    SpriteAnimationFrame(index: 0, beats: 16),
+                    SpriteAnimationFrame(index: 1, beats: 16),
                 ],
             ),
 
@@ -144,8 +144,8 @@
             ),
             sprite_animation: SpriteAnimation(
                 frames: [
-                    SpriteAnimationFrame(index: 0, beats: 1),
-                    SpriteAnimationFrame(index: 1, beats: 1),
+                    SpriteAnimationFrame(index: 0, beats: 16),
+                    SpriteAnimationFrame(index: 1, beats: 16),
                 ],
             ),
 
diff --git a/src/game/actor/level/xp.rs b/src/game/actor/level/xp.rs
index 0365baf..5bb0f93 100644
--- a/src/game/actor/level/xp.rs
+++ b/src/game/actor/level/xp.rs
@@ -6,6 +6,7 @@ use crate::core::UpdateSet;
 use crate::game::actor::faction::Faction;
 use crate::game::actor::level::Level;
 use crate::game::actor::level::LevelConfig;
+use crate::game::actor::player::IsPlayer;
 use crate::game::combat::death::OnDeath;
 use crate::ui::prelude::*;
 use crate::util::prelude::*;
@@ -47,15 +48,16 @@ impl Configure for OnXpReward {
     }
 }
 
-fn receive_xp(trigger: Trigger<OnXpReward>, mut xp_query: Query<&mut Xp>) {
-    let entity = r!(trigger.get_entity());
-    let mut xp = r!(xp_query.get_mut(entity));
-    xp.gain(trigger.event().0);
+// TODO: Not needed for this jam game, but it would be "more correct" to track
+//       the owner of the projectile that killed the actor with the `XpReward`,
+//       and only trigger `OnXpReward` for that entity.
+fn receive_xp(trigger: Trigger<OnXpReward>, mut xp_query: Query<&mut Xp, With<IsPlayer>>) {
+    for mut xp in &mut xp_query {
+        xp.gain(trigger.event().0);
+    }
 }
 
-// TODO: Not needed for this jam game, but it would be "more correct" to track
-//       the owner of the projectile that killed the actor with the `XpReward`.
-/// Experience rewarded to player entities on death.
+/// Experience points rewarded to the killer on death.
 #[derive(Component, Reflect, Serialize, Deserialize, Copy, Clone)]
 #[reflect(Component)]
 #[serde(transparent)]
diff --git a/src/game/spotlight.rs b/src/game/spotlight.rs
index 68f5ba7..45fe5a3 100644
--- a/src/game/spotlight.rs
+++ b/src/game/spotlight.rs
@@ -64,8 +64,8 @@ impl Config for SpotlightConfig {
 impl SpotlightConfig {
     fn color(&self, t: f32) -> Color {
         let n = self.color_loop.len();
-        let t = t * n as f32;
-        let lo = (t as usize).rem_euclid(n);
+        let t = (t * n as f32).rem_euclid(n as f32);
+        let lo = t as usize;
         let hi = if lo + 1 < n { lo + 1 } else { 0 };
         let t = t.fract().quadratic_in_out();
 
diff --git a/src/game/sprite.rs b/src/game/sprite.rs
index 7e54b97..3777e33 100644
--- a/src/game/sprite.rs
+++ b/src/game/sprite.rs
@@ -32,7 +32,7 @@ impl Configure for SpriteAnimation {
             Update,
             update_sprite_animation
                 .in_set(UpdateSet::Update)
-                .run_if(on_beat(4)),
+                .run_if(on_beat(1)),
         );
     }
 }
diff --git a/src/game/wave.rs b/src/game/wave.rs
index 6a509d7..1a2a6d4 100644
--- a/src/game/wave.rs
+++ b/src/game/wave.rs
@@ -1,3 +1,4 @@
+use bevy::ecs::system::EntityCommand;
 use bevy::prelude::*;
 use bevy::utils::HashMap;
 use pyri_state::prelude::*;
@@ -122,3 +123,9 @@ fn any_condition_met(conditions: &[SpawnCondition], current_level: &usize) -> bo
         SpawnCondition::LessThan(value) => current_level < value,
     })
 }
+
+pub fn wave(player: Entity) -> impl EntityCommand<World> {
+    move |mut entity: EntityWorldMut| {
+        entity.insert((Name::new("Wave"), Wave::default(), Selection(player)));
+    }
+}
diff --git a/src/screen/playing.rs b/src/screen/playing.rs
index ea1f657..ceac13a 100644
--- a/src/screen/playing.rs
+++ b/src/screen/playing.rs
@@ -12,6 +12,7 @@ use pyri_state::schedule::ResolveStateSet;
 use crate::core::pause::Pause;
 use crate::game::actor::player::player;
 use crate::game::spotlight::spotlight_lamp_spawner;
+use crate::game::wave::wave;
 use crate::game::GameRoot;
 use crate::screen::fade_in;
 use crate::screen::playing::hud::playing_hud;
@@ -31,12 +32,20 @@ fn enter_playing(mut commands: Commands, game_root: Res<GameRoot>, ui_root: Res<
     commands.spawn_with(fade_in);
 
     // TODO: Character select screen.
+    // Spawn player.
     let player = commands.spawn_with(player("pink")).id();
 
+    // Spawn enemies.
+    commands
+        .spawn_with(wave(player))
+        .set_parent(game_root.enemies);
+
+    // Spawn VFX.
     commands
         .spawn_with(spotlight_lamp_spawner)
         .set_parent(game_root.vfx);
 
+    // Spawn UI.
     commands
         .spawn_with(playing_hud(player))
         .set_parent(ui_root.body);