diff --git a/WebContent/game.jsp b/WebContent/game.jsp
index 9a49550..9ff2f79 100644
--- a/WebContent/game.jsp
+++ b/WebContent/game.jsp
@@ -258,12 +258,12 @@ HttpSession hSession = request.getSession(true);
 <!-- Template for game options. -->
 <div class="hide">
   <div class="game_options" id="game_options_template">
-    Only the game host can change options.
+    <span class="options_host_only">Only the game host can change options.</span>
     <br/><br/>
     Game options:
     <br/>
     <label id="score_limit_template_label" for="score_limit_template">Score limit:</label>
-    <select id="score_limit_template">
+    <select id="score_limit_template" class="score_limit">
       <option value="4">4</option>
       <option value="5">5</option>
       <option value="6">6</option>
@@ -274,7 +274,7 @@ HttpSession hSession = request.getSession(true);
     </select>
     <br/>
     <label id="player_limit_template_label" for="player_limit_template">Player limit:</label>
-    <select id="player_limit_template">
+    <select id="player_limit_template" class="player_limit">
       <option value="3">3</option>
       <option value="4">4</option>
       <option value="5">5</option>
@@ -285,12 +285,14 @@ HttpSession hSession = request.getSession(true);
       <option value="10" selected="selected">10</option>
     </select>
     <br/>
-    <label id="version_template_label" for="version_template">Use cards from version:</label>
-    <select id="version_template">
+    <!--
+    <label id="card_set_template_label" for="card_set_template">Use cards from version:</label>
+    <select id="card_set_template" class="card_set">
       <option value="1">first</option>
       <option value="2">second</option>
-      <option value="both">both</option>
+      <option value="3">both</option>
     </select>
+    -->
   </div>
 </div>
 
diff --git a/WebContent/js/cah.ajax.builder.js b/WebContent/js/cah.ajax.builder.js
index 3919831..9fb075f 100644
--- a/WebContent/js/cah.ajax.builder.js
+++ b/WebContent/js/cah.ajax.builder.js
@@ -133,6 +133,39 @@ cah.ajax.Builder.prototype.withCardId = function(cardId) {
   return this;
 };
 
+/**
+ * @param {number}
+ *          cardSet Card set field to use in the request.
+ * @returns {cah.ajax.Builder} This object.
+ */
+cah.ajax.Builder.prototype.withCardSet = function(cardSet) {
+  this.assertNotExecuted_();
+  this.data[cah.$.AjaxRequest.CARD_SET] = cardSet;
+  return this;
+};
+
+/**
+ * @param {number}
+ *          playerLimit Player limit field to use in the request.
+ * @returns {cah.ajax.Builder} This object.
+ */
+cah.ajax.Builder.prototype.withPlayerLimit = function(playerLimit) {
+  this.assertNotExecuted_();
+  this.data[cah.$.AjaxRequest.PLAYER_LIMIT] = playerLimit;
+  return this;
+};
+
+/**
+ * @param {number}
+ *          scoreLimit Score limit field to use in the request.
+ * @returns {cah.ajax.Builder} This object.
+ */
+cah.ajax.Builder.prototype.withScoreLimit = function(scoreLimit) {
+  this.assertNotExecuted_();
+  this.data[cah.$.AjaxRequest.SCORE_LIMIT] = scoreLimit;
+  return this;
+};
+
 /**
  * Assert that the request from this builder has not already run. Throws an exception if it has.
  * 
diff --git a/WebContent/js/cah.ajax.handlers.js b/WebContent/js/cah.ajax.handlers.js
index 8fd69bd..3fb7c59 100644
--- a/WebContent/js/cah.ajax.handlers.js
+++ b/WebContent/js/cah.ajax.handlers.js
@@ -161,3 +161,7 @@ cah.ajax.SuccessHandlers[cah.$.AjaxOperation.PLAY_CARD] = function(data, req) {
 cah.ajax.SuccessHandlers[cah.$.AjaxOperation.JUDGE_SELECT] = function(data) {
   // pass?
 };
+
+cah.ajax.SuccessHandlers[cah.$.AjaxOperation.CHANGE_GAME_OPTIONS] = function(data) {
+  // pass
+};
diff --git a/WebContent/js/cah.constants.js b/WebContent/js/cah.constants.js
index d3cfc81..8aa583f 100644
--- a/WebContent/js/cah.constants.js
+++ b/WebContent/js/cah.constants.js
@@ -11,6 +11,7 @@ cah.$.AjaxOperation.FIRST_LOAD = "fl";
 cah.$.AjaxOperation.JUDGE_SELECT = "js";
 cah.$.AjaxOperation.LOG_OUT = "lo";
 cah.$.AjaxOperation.GAME_LIST = "ggl";
+cah.$.AjaxOperation.CHANGE_GAME_OPTIONS = "cgo";
 cah.$.AjaxOperation.GET_GAME_INFO = "ggi";
 cah.$.AjaxOperation.PLAY_CARD = "pc";
 cah.$.AjaxOperation.CREATE_GAME = "cg";
@@ -29,8 +30,11 @@ cah.$.AjaxRequest.prototype.dummyForAutocomplete = undefined;
 cah.$.AjaxRequest.MESSAGE = "m";
 cah.$.AjaxRequest.CARD_ID = "cid";
 cah.$.AjaxRequest.GAME_ID = "gid";
+cah.$.AjaxRequest.CARD_SET = "cs";
 cah.$.AjaxRequest.SERIAL = "s";
+cah.$.AjaxRequest.PLAYER_LIMIT = "pL";
 cah.$.AjaxRequest.OP = "o";
+cah.$.AjaxRequest.SCORE_LIMIT = "sl";
 cah.$.AjaxRequest.NICKNAME = "n";
 
 cah.$.AjaxResponse = function() {
@@ -138,7 +142,10 @@ cah.$.GameInfo.prototype.dummyForAutocomplete = undefined;
 cah.$.GameInfo.HOST = "H";
 cah.$.GameInfo.STATE = "S";
 cah.$.GameInfo.PLAYERS = "P";
+cah.$.GameInfo.CARD_SET = "cs";
 cah.$.GameInfo.ID = "gid";
+cah.$.GameInfo.PLAYER_LIMIT = "pL";
+cah.$.GameInfo.SCORE_LIMIT = "sl";
 
 cah.$.GamePlayerInfo = function() {
   // Dummy constructor to make Eclipse auto-complete.
@@ -204,6 +211,7 @@ cah.$.LongPollEvent.GAME_PLAYER_INFO_CHANGE = "gpic";
 cah.$.LongPollEvent.GAME_BLACK_RESHUFFLE = "gbr";
 cah.$.LongPollEvent.GAME_WHITE_RESHUFFLE = "gwr";
 cah.$.LongPollEvent.GAME_STATE_CHANGE = "gsc";
+cah.$.LongPollEvent.GAME_OPTIONS_CHANGED = "goc";
 cah.$.LongPollEvent.PLAYER_LEAVE = "pl";
 cah.$.LongPollEvent.CHAT = "c";
 cah.$.LongPollEvent.HAND_DEAL = "hd";
diff --git a/WebContent/js/cah.game.js b/WebContent/js/cah.game.js
index fef74d9..2b572d8 100644
--- a/WebContent/js/cah.game.js
+++ b/WebContent/js/cah.game.js
@@ -68,13 +68,12 @@ cah.Game = function(id) {
   this.optionsElement_.id = "game_options_" + id;
   $("#score_limit_template_label", this.optionsElement_).attr("for", "score_limit_" + id);
   $("#player_limit_template_label", this.optionsElement_).attr("for", "player_limit_" + id);
-  $("#version_template_label", this.optionsElement_).attr("for", "version_" + id);
+  $("#card_set_template_label", this.optionsElement_).attr("for", "card_set_" + id);
   $("#score_limit_template", this.optionsElement_).attr("id", "score_limit_" + id);
   $("#player_limit_template", this.optionsElement_).attr("id", "player_limit_" + id);
-  $("#version_template", this.optionsElement_).attr("id", "version_" + id);
+  $("#card_set_template", this.optionsElement_).attr("id", "card_set_" + id);
   $("label", this.optionsElement_).removeAttr("id");
   $(".game_options", this.element_).replaceWith(this.optionsElement_);
-  this.hideOptions_();
 
   /**
    * The nickname of the host of this game.
@@ -232,6 +231,7 @@ cah.Game = function(id) {
   $("#start_game").click(cah.bind(this, this.startGameClick_));
   $(".confirm_card", this.element_).click(cah.bind(this, this.confirmClick_));
   $(".game_show_last_round", this.element_).click(cah.bind(this, this.showLastRoundClick_));
+  $("select", this.element_).change(cah.bind(this, this.optionChanged_));
 
   $(window).on("resize.game_" + this.id_, cah.bind(this, this.windowResize_));
 };
@@ -638,6 +638,13 @@ cah.Game.prototype.updateGameStatus = function(data) {
     $(".game_white_cards", this.element_).empty();
   }
 
+  $(".score_limit", this.optionsElement_).val(
+      data[cah.$.AjaxResponse.GAME_INFO][cah.$.GameInfo.SCORE_LIMIT]);
+  $(".player_limit", this.optionsElement_).val(
+      data[cah.$.AjaxResponse.GAME_INFO][cah.$.GameInfo.PLAYER_LIMIT]);
+  $(".card_set", this.optionsElement_).val(
+      data[cah.$.AjaxResponse.GAME_INFO][cah.$.GameInfo.CARD_SET]);
+
   var playerInfos = data[cah.$.AjaxResponse.PLAYER_INFO];
   for ( var index in playerInfos) {
     this.updateUserStatus(playerInfos[index]);
@@ -990,14 +997,24 @@ cah.Game.prototype.stateChange = function(data) {
   }
 };
 
+/**
+ * Hide the options panel.
+ * 
+ * @private
+ */
+cah.Game.prototype.hideOptions_ = function() {
+  $(".game_options", this.element_).addClass("hide");
+  $(".game_right_side", this.element_).removeClass("hide");
+};
+
 /**
  * Show the options panel. Enables or disables the controls based on whether we are the host.
  * 
  * @private
  */
 cah.Game.prototype.showOptions_ = function() {
-  // $(".game_options", this.element_).removeClass("hide");
-  // $(".game_right_side", this.element_).addClass("hide");
+  $(".game_options", this.element_).removeClass("hide");
+  $(".game_right_side", this.element_).addClass("hide");
   this.updateOptionsEnabled_();
 };
 
@@ -1009,19 +1026,33 @@ cah.Game.prototype.showOptions_ = function() {
 cah.Game.prototype.updateOptionsEnabled_ = function() {
   if (this.host_ == cah.nickname) {
     $("select", this.optionsElement_).removeAttr("disabled");
+    $(".options_host_only", this.optionsElement_).addClass("hide");
   } else {
     $("select", this.optionsElement_).attr("disabled", "disabled");
+    $(".options_host_only", this.optionsElement_).removeClass("hide");
   }
 };
 
 /**
- * Hide the options panel.
+ * Event handler for changing an option.
  * 
+ * @param e
  * @private
  */
-cah.Game.prototype.hideOptions_ = function() {
-  $(".game_options", this.element_).addClass("hide");
-  $(".game_right_side", this.element_).removeClass("hide");
+cah.Game.prototype.optionChanged_ = function(e) {
+  cah.Ajax.build(cah.$.AjaxOperation.CHANGE_GAME_OPTIONS).withGameId(this.id_).withScoreLimit(
+      $(".score_limit", this.optionsElement_).val()).withPlayerLimit(
+      $(".player_limit", this.optionsElement_).val()).withCardSet(
+      $(".card_set", this.optionsElement_).val()).run();
+};
+
+/**
+ * 
+ * @param {object}
+ *          data Event data from server.
+ */
+cah.Game.prototype.optionsChanged = function(data) {
+  this.refreshGameStatus();
 };
 
 // ///////////////////////////////////////////////
diff --git a/WebContent/js/cah.longpoll.handlers.js b/WebContent/js/cah.longpoll.handlers.js
index 3653bf1..89fee7e 100644
--- a/WebContent/js/cah.longpoll.handlers.js
+++ b/WebContent/js/cah.longpoll.handlers.js
@@ -128,6 +128,11 @@ cah.longpoll.EventHandlers[cah.$.LongPollEvent.GAME_JUDGE_LEFT] = function(data)
   cah.longpoll.EventHandlers.__gameEvent(data, cah.Game.prototype.judgeLeft, "", "judge left");
 };
 
+cah.longpoll.EventHandlers[cah.$.LongPollEvent.GAME_OPTIONS_CHANGED] = function(data) {
+  cah.longpoll.EventHandlers.__gameEvent(data, cah.Game.prototype.optionsChanged, data,
+      "options changed");
+};
+
 /**
  * Helper for event handlers for game events.
  * 
diff --git a/src/net/socialgamer/cah/Constants.java b/src/net/socialgamer/cah/Constants.java
index 13891ad..c2d37a6 100644
--- a/src/net/socialgamer/cah/Constants.java
+++ b/src/net/socialgamer/cah/Constants.java
@@ -136,6 +136,7 @@ public class Constants {
    */
   public enum AjaxOperation {
     ADMIN_SET_VERBOSE_LOG("svl"),
+    CHANGE_GAME_OPTIONS("cgo"),
     CHAT("c"),
     CREATE_GAME("cg"),
     FIRST_LOAD("fl"),
@@ -174,10 +175,13 @@ public class Constants {
    */
   public enum AjaxRequest {
     CARD_ID("cid"),
+    CARD_SET("cs"),
     GAME_ID("gid"),
     MESSAGE("m"),
     NICKNAME("n"),
     OP("o"),
+    PLAYER_LIMIT("pL"),
+    SCORE_LIMIT("sl"),
     SERIAL("s");
 
     private final String field;
@@ -314,6 +318,7 @@ public class Constants {
     GAME_BLACK_RESHUFFLE("gbr"),
     GAME_JUDGE_LEFT("gjl"),
     GAME_LIST_REFRESH("glr"),
+    GAME_OPTIONS_CHANGED("goc"),
     GAME_PLAYER_INFO_CHANGE("gpic"),
     GAME_PLAYER_JOIN("gpj"),
     GAME_PLAYER_LEAVE("gpl"),
@@ -487,10 +492,16 @@ public class Constants {
    * Fields for information about a game.
    */
   public enum GameInfo {
+    @DuplicationAllowed
+    CARD_SET(AjaxRequest.CARD_SET),
     HOST("H"),
     @DuplicationAllowed
     ID(AjaxRequest.GAME_ID),
+    @DuplicationAllowed
+    PLAYER_LIMIT(AjaxRequest.PLAYER_LIMIT),
     PLAYERS("P"),
+    @DuplicationAllowed
+    SCORE_LIMIT(AjaxRequest.SCORE_LIMIT),
     STATE("S");
 
     private final String key;
diff --git a/src/net/socialgamer/cah/data/Game.java b/src/net/socialgamer/cah/data/Game.java
index 3f8e85d..6594c76 100644
--- a/src/net/socialgamer/cah/data/Game.java
+++ b/src/net/socialgamer/cah/data/Game.java
@@ -91,15 +91,13 @@ public class Game {
   private final Object blackCardLock = new Object();
   private WhiteDeck whiteDeck;
   private GameState state;
-  // TODO make this host-configurable
-  private final int maxPlayers = 10;
+  private int maxPlayers = 10;
   private int judgeIndex = 0;
-  // TODO also need to configure this
   private final static int ROUND_INTERMISSION = 8 * 1000;
   private Timer nextRoundTimer;
   private final Object nextRoundTimerLock = new Object();
-  // TODO host config
-  private final int scoreGoal = 8;
+  private int scoreGoal = 8;
+  private int cardSet = 0;
 
   /**
    * Create a new game.
@@ -303,6 +301,16 @@ public class Game {
     return id;
   }
 
+  public void updateGameSettings(final int scoreLimit, final int playerLimit, final int cardSet1) {
+    this.scoreGoal = scoreLimit;
+    this.maxPlayers = playerLimit;
+    this.cardSet = cardSet1;
+
+    final HashMap<ReturnableData, Object> data = getEventMap();
+    data.put(LongPollResponse.EVENT, LongPollEvent.GAME_OPTIONS_CHANGED.toString());
+    broadcastToPlayers(MessageType.GAME_EVENT, data);
+  }
+
   /**
    * @return This game's general information: ID, host, state, player list.
    */
@@ -311,6 +319,9 @@ public class Game {
     info.put(GameInfo.ID, id);
     info.put(GameInfo.HOST, host.toString());
     info.put(GameInfo.STATE, state.toString());
+    info.put(GameInfo.CARD_SET, cardSet);
+    info.put(GameInfo.PLAYER_LIMIT, maxPlayers);
+    info.put(GameInfo.SCORE_LIMIT, scoreGoal);
     synchronized (players) {
       final List<String> playerNames = new ArrayList<String>(players.size());
       for (final Player player : players) {
diff --git a/src/net/socialgamer/cah/handlers/ChangeGameOptionHandler.java b/src/net/socialgamer/cah/handlers/ChangeGameOptionHandler.java
new file mode 100644
index 0000000..bc8ce3c
--- /dev/null
+++ b/src/net/socialgamer/cah/handlers/ChangeGameOptionHandler.java
@@ -0,0 +1,51 @@
+package net.socialgamer.cah.handlers;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.servlet.http.HttpSession;
+
+import net.socialgamer.cah.Constants.AjaxOperation;
+import net.socialgamer.cah.Constants.AjaxRequest;
+import net.socialgamer.cah.Constants.ErrorCode;
+import net.socialgamer.cah.Constants.GameState;
+import net.socialgamer.cah.Constants.ReturnableData;
+import net.socialgamer.cah.RequestWrapper;
+import net.socialgamer.cah.data.Game;
+import net.socialgamer.cah.data.GameManager;
+import net.socialgamer.cah.data.User;
+
+import com.google.inject.Inject;
+
+
+public class ChangeGameOptionHandler extends GameWithPlayerHandler {
+
+  public static final String OP = AjaxOperation.CHANGE_GAME_OPTIONS.toString();
+
+  @Inject
+  public ChangeGameOptionHandler(final GameManager gameManager) {
+    super(gameManager);
+  }
+
+  @Override
+  public Map<ReturnableData, Object> handleWithUserInGame(final RequestWrapper request,
+      final HttpSession session, final User user, final Game game) {
+    final Map<ReturnableData, Object> data = new HashMap<ReturnableData, Object>();
+
+    if (game.getHost() != user) {
+      return error(ErrorCode.NOT_GAME_HOST);
+    } else if (game.getState() != GameState.LOBBY) {
+      return error(ErrorCode.ALREADY_STARTED);
+    } else {
+      try {
+        final int scoreLimit = Integer.parseInt(request.getParameter(AjaxRequest.SCORE_LIMIT));
+        final int playerLimit = Integer.parseInt(request.getParameter(AjaxRequest.PLAYER_LIMIT));
+        final int cardSet = Integer.parseInt(request.getParameter(AjaxRequest.CARD_SET));
+        game.updateGameSettings(scoreLimit, playerLimit, cardSet);
+      } catch (final NumberFormatException nfe) {
+        return error(ErrorCode.BAD_REQUEST);
+      }
+      return data;
+    }
+  }
+}
diff --git a/src/net/socialgamer/cah/handlers/Handlers.java b/src/net/socialgamer/cah/handlers/Handlers.java
index 968ddfc..2c4128f 100644
--- a/src/net/socialgamer/cah/handlers/Handlers.java
+++ b/src/net/socialgamer/cah/handlers/Handlers.java
@@ -11,6 +11,7 @@ public class Handlers {
   static {
     LIST = new HashMap<String, Class<? extends Handler>>();
     LIST.put(AdminSetVerboseLog.OP, AdminSetVerboseLog.class);
+    LIST.put(ChangeGameOptionHandler.OP, ChangeGameOptionHandler.class);
     LIST.put(ChatHandler.OP, ChatHandler.class);
     LIST.put(CreateGameHandler.OP, CreateGameHandler.class);
     LIST.put(FirstLoadHandler.OP, FirstLoadHandler.class);