diff --git a/.gitignore b/.gitignore
index 40fbb28..cc2ff39 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,12 @@
+/target
+/lib
+/classes
+/checkouts
 pom.xml
-*jar
-/lib/
-/classes/
-/targets/
+pom.xml.asc
+*.jar
+*.class
 .lein-deps-sum
+.lein-failures
+.lein-plugins
+.lein-repl-history
diff --git a/android/project.clj b/android/project.clj
new file mode 100644
index 0000000..3295004
--- /dev/null
+++ b/android/project.clj
@@ -0,0 +1,6 @@
+(defproject play-clj-android "0.1.0-SNAPSHOT"
+  :description "Library for making Android games"
+  :license {:name "Public Domain"
+            :url "http://unlicense.org/UNLICENSE"}
+  :dependencies [[com.badlogicgames.gdx/gdx-backend-android "0.9.9"]
+                 [play-clj "0.1.0-SNAPSHOT"]])
diff --git a/android/src/play_clj/android.clj b/android/src/play_clj/android.clj
new file mode 100644
index 0000000..d29c76a
--- /dev/null
+++ b/android/src/play_clj/android.clj
@@ -0,0 +1 @@
+(ns play-clj.android)
diff --git a/common/project.clj b/common/project.clj
new file mode 100644
index 0000000..7a8f44f
--- /dev/null
+++ b/common/project.clj
@@ -0,0 +1,6 @@
+(defproject play-clj "0.1.0-SNAPSHOT"
+  :description "Library for making cross-platform games"
+  :license {:name "Public Domain"
+            :url "http://unlicense.org/UNLICENSE"}
+  :dependencies [[com.badlogicgames.gdx/gdx "0.9.9" :use-resources true]
+                 [org.clojure/clojure "1.5.1"]])
diff --git a/common/src/play_clj/core.clj b/common/src/play_clj/core.clj
new file mode 100644
index 0000000..1c23bdd
--- /dev/null
+++ b/common/src/play_clj/core.clj
@@ -0,0 +1,36 @@
+(ns play-clj.core
+  (:import [com.badlogic.gdx Game Screen]))
+
+(defn set-screen!
+  [^Game game ^Screen screen]
+  (.setScreen game screen))
+
+(defn defscreen*
+  [{:keys [on-show on-render on-dispose on-hide on-pause on-resize on-resume]}]
+  (let [total-time (atom 0)
+        on-show (or on-show (fn []))
+        on-render (or on-render (fn [d t]))
+        on-dispose (or on-dispose (fn []))
+        on-hide (or on-hide (fn []))
+        on-pause (or on-pause (fn []))
+        on-resize (or on-resize (fn [w h]))
+        on-resume (or on-resume (fn []))]
+    (proxy [Screen] []
+      (show [] (on-show))
+      (render [delta-time]
+        (swap! total-time + delta-time)
+        (on-render delta-time @total-time))
+      (dispose [] (on-dispose))
+      (hide [] (on-hide))
+      (pause [] (on-pause))
+      (resize [w h] (on-resize w h))
+      (resume [] (on-resume)))))
+
+(defmacro defscreen
+  [name & {:keys [] :as options}]
+  `(def ~name (defscreen* ~options)))
+
+(defn create-game
+  [{:keys [start-screen]}]
+  (proxy [Game] []
+    (create [] (when start-screen (set-screen! this start-screen)))))
diff --git a/desktop/project.clj b/desktop/project.clj
new file mode 100644
index 0000000..3c2bf3f
--- /dev/null
+++ b/desktop/project.clj
@@ -0,0 +1,8 @@
+(defproject play-clj-desktop "0.1.0-SNAPSHOT"
+  :description "Library for making desktop games"
+  :license {:name "Public Domain"
+            :url "http://unlicense.org/UNLICENSE"}
+  :dependencies [[com.badlogicgames.gdx/gdx-backend-lwjgl "0.9.9"]
+                 [com.badlogicgames.gdx/gdx-platform "0.9.9"
+                  :classifier "natives-desktop"]
+                 [play-clj "0.1.0-SNAPSHOT"]])
diff --git a/desktop/src/play_clj/desktop.clj b/desktop/src/play_clj/desktop.clj
new file mode 100644
index 0000000..69aaa37
--- /dev/null
+++ b/desktop/src/play_clj/desktop.clj
@@ -0,0 +1,17 @@
+(ns play-clj.desktop
+  (:require [play-clj.core :refer :all])
+  (:import [com.badlogic.gdx.backends.lwjgl LwjglApplication]
+           [org.lwjgl.input Keyboard]))
+
+(defmacro defgame
+  [name & {:keys [title width height]
+           :as options}]
+  (let [title (or title "")
+        width (or width 800)
+        height (or height 600)]
+    `(do
+       (def ~name (create-game ~options))
+       (defn ~'-main
+         []
+         (LwjglApplication. ~name ~title ~width ~height true)
+         (Keyboard/enableRepeatEvents true)))))
diff --git a/ios/project.clj b/ios/project.clj
new file mode 100644
index 0000000..cb00934
--- /dev/null
+++ b/ios/project.clj
@@ -0,0 +1,6 @@
+(defproject play-clj-ios "0.1.0-SNAPSHOT"
+  :description "Library for making iOS games"
+  :license {:name "Public Domain"
+            :url "http://unlicense.org/UNLICENSE"}
+  :dependencies [[com.badlogicgames.gdx/gdx-backend-robovm "0.9.9"]
+                 [play-clj "0.1.0-SNAPSHOT"]])
diff --git a/ios/src/play_clj/ios.clj b/ios/src/play_clj/ios.clj
new file mode 100644
index 0000000..74bac84
--- /dev/null
+++ b/ios/src/play_clj/ios.clj
@@ -0,0 +1 @@
+(ns play-clj.ios)