diff --git a/src/play_clj/core_2d.clj b/src/play_clj/core_2d.clj
index 87b8f8f..e4a5a77 100644
--- a/src/play_clj/core_2d.clj
+++ b/src/play_clj/core_2d.clj
@@ -70,9 +70,9 @@
 (defmacro animation
   [duration textures & args]
   `(Animation. ~duration
-               (u/gdx-into-array (map :object ~textures))
-               (u/gdx-static-field :graphics :g2d :Animation
-                                   ~(or (first args) :normal))))
+               (u/convert-array (map :object ~textures))
+               (u/static-field-upper :graphics :g2d :Animation
+                                     ~(or (first args) :normal))))
 
 (defn animation->texture
   ([{:keys [total-time]} ^Animation animation]
diff --git a/src/play_clj/core_global.clj b/src/play_clj/core_global.clj
index 5e6a61b..4ce248f 100644
--- a/src/play_clj/core_global.clj
+++ b/src/play_clj/core_global.clj
@@ -13,7 +13,7 @@
 (defmacro color
   [& args]
   `~(if (keyword? (first args))
-      `(Color. ^Color (u/gdx-static-field :graphics :Color ~(first args)))
+      `(Color. ^Color (u/static-field-upper :graphics :Color ~(first args)))
       `(Color. ~@args)))
 
 ; interop
@@ -62,7 +62,7 @@
 
 (defmacro key-code
   [key]
-  `~(symbol (str u/gdx-package ".Input$Keys/" (u/key->static-field key))))
+  `~(symbol (str u/main-package ".Input$Keys/" (u/key->static-field key true))))
 
 (defmacro is-pressed?
   [key]
diff --git a/src/play_clj/ui.clj b/src/play_clj/ui.clj
index 7f6dd4e..2428cd1 100644
--- a/src/play_clj/ui.clj
+++ b/src/play_clj/ui.clj
@@ -6,7 +6,7 @@
            [com.badlogic.gdx.scenes.scene2d Actor Stage]
            [com.badlogic.gdx.scenes.scene2d.ui ButtonGroup CheckBox Dialog
             HorizontalGroup Image ImageButton ImageTextButton Label Skin Slider
-            TextButton TextField VerticalGroup WidgetGroup]
+            Table TextButton TextField VerticalGroup WidgetGroup]
            [com.badlogic.gdx.scenes.scene2d.utils ActorGestureListener
             ChangeListener ClickListener DragListener FocusListener
             NinePatchDrawable SpriteDrawable TextureRegionDrawable
@@ -14,7 +14,7 @@
 
 (defmacro drawable
   [type & options]
-  `(~(symbol (str u/gdx-package ".scenes.scene2d.u."
+  `(~(symbol (str u/main-package ".scenes.scene2d.u."
                   (u/key->class type) "Drawable."))
      ~@options))
 
@@ -24,7 +24,7 @@
 
 (defmacro style
   [type & options]
-  `(~(symbol (str u/gdx-package ".scenes.scene2d.ui."
+  `(~(symbol (str u/main-package ".scenes.scene2d.ui."
                   (u/key->class type) "$"
                   (u/key->class type) "Style."))
      ~@options))
@@ -119,30 +119,43 @@
 
 ; groups
 
-(defn add-children
-  [^WidgetGroup group children]
-  (doseq [{:keys [object]} children]
-    (assert (isa? (type object) Actor))
-    (.addActor group ^Actor object))
-  group)
+(defmulti add-to-group! #(-> % first :object type) :default WidgetGroup)
 
-(defn horizontal*
-  [children]
-  (add-children (HorizontalGroup.) children))
+(defmethod add-to-group! WidgetGroup
+  [[{:keys [^WidgetGroup object]} children]]
+  (doseq [child children]
+    (.addActor object ^Actor (:object child))))
+
+(defmethod add-to-group! Table
+  [[{:keys [^Table object]} children]]
+  (doseq [child children]
+    (.add object ^Actor (:object child))))
+
+(defn add!
+  [group children]
+  (add-to-group! [group children])
+  group)
 
 (defmacro horizontal
   [children & options]
-  `(u/create-entity (u/calls! ^HorizontalGroup (horizontal* ~children)
-                              ~@options)))
-
-(defn vertical*
-  [children]
-  (add-children (VerticalGroup.) children))
+  `(-> (u/calls! ^HorizontalGroup (HorizontalGroup.) ~@options)
+       (doto (.setFillParent true))
+       u/create-entity
+       (add! ~children)))
 
 (defmacro vertical
   [children & options]
-  `(u/create-entity (u/calls! ^VerticalGroup (vertical* ~children)
-                              ~@options)))
+  `(-> (u/calls! ^VerticalGroup (VerticalGroup.) ~@options)
+       (doto (.setFillParent true))
+       u/create-entity
+       (add! ~children)))
+
+(defmacro table
+  [children & options]
+  `(-> (u/calls! ^Table (Table.) ~@options)
+       (doto (.setFillParent true))
+       u/create-entity
+       (add! ~children)))
 
 ; listeners
 
@@ -266,3 +279,15 @@
 (defmacro dialog!
   [entity k & options]
   `(u/call! ^Dialog (:object ~entity) ~k ~@options))
+
+(defmacro horizontal!
+  [entity k & options]
+  `(u/call! ^HorizontalGroup (:object ~entity) ~k ~@options))
+
+(defmacro vertical!
+  [entity k & options]
+  `(u/call! ^VerticalGroup (:object ~entity) ~k ~@options))
+
+(defmacro table!
+  [entity k & options]
+  `(u/call! ^Table (:object ~entity) ~k ~@options))
diff --git a/src/play_clj/utils.clj b/src/play_clj/utils.clj
index 7a4a12a..33d08a7 100644
--- a/src/play_clj/utils.clj
+++ b/src/play_clj/utils.clj
@@ -4,7 +4,7 @@
            [com.badlogic.gdx.utils Array]
            [com.badlogic.gdx.scenes.scene2d Actor]))
 
-(def ^:const gdx-package "com.badlogic.gdx")
+(def ^:const main-package "com.badlogic.gdx")
 
 (defn ^:private split-key
   [key]
@@ -12,12 +12,12 @@
 
 (defn ^:private join-keys
   [keys]
-  (->> keys (map name) (s/join ".") (str gdx-package ".")))
+  (->> keys (map name) (s/join ".") (str main-package ".")))
 
 (defn key->static-field
-  [key]
+  [key upper?]
   (->> (split-key key)
-       (map s/upper-case)
+       (map (if upper? s/upper-case s/lower-case))
        (s/join "_")
        symbol))
 
@@ -38,17 +38,21 @@
          (str ".")
          symbol)))
 
-(defn gdx-static-field*
-  [args]
-  (->> (key->static-field (last args))
+(defn ^:private static-field
+  [args upper?]
+  (->> (key->static-field (last args) upper?)
        (str (join-keys (butlast args)) "/")
        symbol))
 
-(defmacro gdx-static-field
+(defmacro static-field-lower
   [& args]
-  `~(gdx-static-field* args))
+  `~(static-field args false))
 
-(defn gdx-into-array
+(defmacro static-field-upper
+  [& args]
+  `~(static-field args true))
+
+(defn convert-array
   [a]
   (Array. true (into-array a) 1 (count a)))