diff --git a/concordia/components/game_master/coordination_payoffs.py b/concordia/components/game_master/coordination_payoffs.py
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+++ b/concordia/components/game_master/coordination_payoffs.py
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+# Copyright 2022 DeepMind Technologies Limited.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""A component for computing and delivering payoffs in a coordination game."""
+
+from collections.abc import Callable, Mapping, Sequence
+import datetime
+
+from concordia.agents import basic_agent
+from concordia.associative_memory import associative_memory
+from concordia.components.game_master import current_scene
+from concordia.language_model import language_model
+from concordia.typing import component
+import numpy as np
+import termcolor
+
+
+class CoordinationPayoffs(component.Component):
+  """Define payoffs for coordination games.
+
+  The players reward is proportional to the number of players who choose the
+  same option as them, multiplied by the option's multiplier and player
+  multiplier, divided by the number of players.
+  """
+
+  def __init__(
+      self,
+      model: language_model.LanguageModel,
+      memory: associative_memory.AssociativeMemory,
+      option_multipliers: Mapping[str, float],
+      player_multipliers: Mapping[str, Mapping[str, float]],
+      resolution_scene: str,
+      players: Sequence[basic_agent.BasicAgent],
+      acting_player_names: Sequence[str],
+      outcome_summarization_fn: Callable[
+          [Mapping[str, str], Mapping[str, float]], Mapping[str, str]
+      ],
+      clock_now: Callable[[], datetime.datetime],
+      name: str = 'scoring function',
+      verbose: bool = False,
+  ):
+    """Initialize a scoring function component.
+
+    Args:
+      model: a language model
+      memory: an associative memory
+      option_multipliers: per option multipliers of rewards
+      player_multipliers: per player multipliers of rewards
+      resolution_scene: on which scene type should this component be updated
+        after the event, i.e. when to check the joint action and compute results
+      players: sequence of agents (a superset of the active players)
+      acting_player_names: sequence of names of players who act each stage
+      outcome_summarization_fn: function of joint actions and rewards
+        which returns an outcome description message for each player
+      clock_now: Function to call to get current time.
+      name: name of this component e.g. Possessions, Account, Property, etc
+      verbose: whether to print the full update chain of thought or not
+    """
+    self._model = model
+    self._memory = memory
+
+    self._option_multipliers = option_multipliers
+    self._player_multipliers = player_multipliers
+
+    self._players = players
+    self._acting_player_names = acting_player_names
+    self._outcome_summarization_fn = outcome_summarization_fn
+    self._clock_now = clock_now
+    self._name = name
+    self._verbose = verbose
+
+    self._history = []
+    self._state = ''
+    self._partial_states = {player.name: '' for player in self._players}
+    self._player_scores = {player.name: 0 for player in self._players}
+
+    self._resolution_scene = resolution_scene
+    self._current_scene = current_scene.CurrentScene(
+        name='current scene type',
+        memory=self._memory,
+        clock_now=self._clock_now,
+        verbose=self._verbose,
+    )
+
+    self.reset()
+    # Set the initial state's string representation.
+    self.update()
+
+  def reset(self) -> None:
+    self._stage_idx = 0
+    # Map each player's name to their component of the joint action.
+    self._partial_joint_action = {
+        name: None for name in self._acting_player_names
+    }
+
+  def name(self) -> str:
+    """Returns the name of this component."""
+    return self._name
+
+  def get_last_log(self):
+    if self._history:
+      return self._history[-1].copy()
+
+  def get_history(self):
+    return self._history.copy()
+
+  def state(self) -> str:
+    return self._state
+
+  def partial_state(
+      self,
+      player_name: str,
+  ) -> str:
+    """Return a player-specific view of the component's state."""
+    return self._partial_states[player_name]
+
+  def update(self) -> None:
+    self._current_scene.update()
+
+  def _joint_action_is_complete(self, joint_action: Mapping[str, str]) -> bool:
+    for acting_player_name in self._acting_player_names:
+      if joint_action[acting_player_name] is None:
+        return False
+    return True
+
+  def _count_string_occurrences(self, target_string, dictionary):
+    count = 0
+    for value in dictionary.values():
+      if value == target_string:
+        count += 1
+    return count
+
+  def _get_rewards_from_joint_action(
+      self, joint_action: Mapping[str, str]
+  ) -> Mapping[str, float]:
+
+    rewards = {}
+    num_players = len(self._players)
+    for player in self._players:
+      player_action = joint_action[player.name]
+      same_choice = self._count_string_occurrences(player_action, joint_action)
+      player_preference = self._player_multipliers[player.name][player_action]
+      option_multiplier = self._option_multipliers[player_action]
+      rewards[player.name] = (
+          same_choice * player_preference * option_multiplier / num_players
+      )
+
+    return rewards
+
+  def _set_outcome_messages(
+      self,
+      joint_action: Mapping[str, str],
+      rewards: Mapping[str, float],
+  ) -> None:
+    # Only the game master sees the actual reward values.
+    game_master_private_state = '\n'.join([
+        f'{player.name}: {self._player_scores[player.name]}'
+        for player in self._players
+    ])
+    # Players see a text-based summarization of the events, which may or may not
+    # include the actual reward values.
+    partial_states = self._outcome_summarization_fn(joint_action, rewards)
+    common_view_of_player_obs = '\n'.join([
+        f'{name} observed: {observation}'
+        for name, observation in partial_states.items()
+    ])
+
+    # State is only observed by the game master since players get
+    # their observations from `partial_states`.
+    self._state = f'{common_view_of_player_obs}\n{game_master_private_state}'
+
+    # The game master gets a memory of the state.
+    self._memory.add(self._state)
+    # Active players observe their own partial state description and inactive
+    # players get the common description.
+    for player in self._players:
+      if player.name in self._acting_player_names:
+        player.observe(partial_states[player.name])
+      else:
+        player.observe(common_view_of_player_obs)
+
+  def update_before_event(self, player_action_attempt: str) -> None:
+    # `player_action_attempt` is formatted as "name: attempt".
+    player_name, choice_str = player_action_attempt.split(': ')
+    self._partial_joint_action[player_name] = choice_str
+    self._state = ''
+
+  def update_after_event(
+      self,
+      event_statement: str,
+  ) -> None:
+    current_scene_type = self._current_scene.state()
+    payoffs_for_log = ''
+    joint_action_for_log = ''
+    finished = False
+    if current_scene_type == self._resolution_scene:
+      # Check if all players have acted so far in the current stage game.
+      joint_action = self._partial_joint_action.copy()
+      if self._joint_action_is_complete(joint_action):
+        # Map the joint action to rewards per player.
+        rewards = self._get_rewards_from_joint_action(joint_action)
+
+        # Accumulate the rewards per player.
+        for name in self._acting_player_names:
+          self._player_scores[name] += rewards[name]
+
+        # Use the outcome summarization function to get the state.
+        self._set_outcome_messages(joint_action, rewards)
+        self._memory.extend([
+            self.state(),
+        ])
+
+        joint_action_for_log = str(self._partial_joint_action)
+        payoffs_for_log = self.state()
+        finished = True
+
+        if self._verbose:
+          print(termcolor.colored(self.state(), 'yellow'))
+
+    num_players_already_acted = np.sum(
+        [value is not None for value in self._partial_joint_action.values()]
+    )
+    total_num_players_to_act = len(self._partial_joint_action)
+    update_log = {
+        'date': self._clock_now(),
+        'Summary': self.name(),
+        'Stage index': self._stage_idx,
+        'How many players acted so far this stage': (
+            f'{num_players_already_acted}/{total_num_players_to_act}'
+        ),
+        'Payoffs': payoffs_for_log,
+        'Joint action': joint_action_for_log,
+    }
+    self._history.append(update_log)
+
+    if finished:
+      # Advance to the next stage.
+      self._stage_idx += 1
+      self._partial_joint_action = {
+          name: None for name in self._acting_player_names
+      }
+
+  def get_scores(self) -> Mapping[str, float]:
+    """Return the cumulative score for each player."""
+    return self._player_scores