diff --git a/tetrarcade.py b/tetrarcade.py
index bf34ce5..7fa8fe8 100644
--- a/tetrarcade.py
+++ b/tetrarcade.py
@@ -13,7 +13,7 @@ python -m pip install --user arcade
 """
 )
 
-from tetris import Tetris, Status, AbstractScheduler
+from tetrislogic import TetrisLogic, Status, AbstractScheduler
 
 
 # Constants
@@ -105,8 +105,7 @@ class ArcadeScheduler(AbstractScheduler):
         self._tasks = {}
 
     def start(self, task, period):
-        def _task(delta_time):
-            task()
+        _task = lambda _: task()
         self._tasks[task] = _task
         arcade.schedule(_task, period)
 
@@ -120,7 +119,7 @@ class ArcadeScheduler(AbstractScheduler):
             del self._tasks[task]
 
 
-class TetrArcade(Tetris, arcade.Window):
+class TetrArcade(TetrisLogic, arcade.Window):
 
     scheduler = ArcadeScheduler()
 
@@ -129,7 +128,7 @@ class TetrArcade(Tetris, arcade.Window):
 
         locale.setlocale(locale.LC_ALL, '')
 
-        self.actions = {
+        self.KEY_MAP = {
             Status.STARTING: {
                 arcade.key.ENTER:     self.new_game
             },
@@ -217,7 +216,7 @@ class TetrArcade(Tetris, arcade.Window):
     def on_key_press(self, key, modifiers):
         for key_or_modifier in (key, modifiers):
             try:
-                action = self.actions[self.status][key_or_modifier]
+                action = self.KEY_MAP[self.status][key_or_modifier]
             except KeyError:
                 pass
             else:
@@ -225,7 +224,7 @@ class TetrArcade(Tetris, arcade.Window):
 
     def on_key_release(self, key, modifiers):
         try:
-            action = self.actions[self.status][key]
+            action = self.KEY_MAP[self.status][key]
         except KeyError:
             pass
         else:
diff --git a/tetris.py b/tetrislogic.py
similarity index 98%
rename from tetris.py
rename to tetrislogic.py
index 28cd1c3..40936ec 100644
--- a/tetris.py
+++ b/tetrislogic.py
@@ -182,7 +182,7 @@ class Tetromino:
         return cls.random_bag.pop()()
 
 
-class Tetris():
+class TetrisLogic():
 
 
     T_SLOT = (Coord(-1, 1), Coord(1, 1), Coord(1, -1), Coord(-1, -1))
@@ -227,7 +227,7 @@ class Tetris():
         self.current_piece = None
         self.held_piece = None
         self.status = Status.PLAYING
-        self.scheduler.start(self.clock, 1)
+        self.scheduler.start(self.update_time, 1)
         self.new_level()
 
     def new_level(self):
@@ -460,7 +460,7 @@ class Tetris():
         self.status = Status.PAUSED
         self.scheduler.stop(self.drop)
         self.scheduler.stop(self.lock)
-        self.scheduler.stop(self.clock)
+        self.scheduler.stop(self.update_time)
         self.pressed_actions = []
         self.stop_autorepeat()
 
@@ -469,15 +469,15 @@ class Tetris():
         self.scheduler.start(self.drop, self.fall_delay)
         if self.current_piece.prelocked:
             self.scheduler.start(self.lock, self.lock_delay)
-        self.scheduler.start(self.clock, 1)
+        self.scheduler.start(self.update_time, 1)
 
     def game_over(self):
         self.status = Status.OVER
         self.scheduler.stop(self.drop)
-        self.scheduler.stop(self.clock)
+        self.scheduler.stop(self.update_time)
         self.scheduler.stop(self.repeat_action)
 
-    def clock(self, delta_time=1):
+    def update_time(self, delta_time=1):
         self.time += delta_time
 
     def do_action(self, action):