diff --git a/lib/game_server.rb b/lib/game_server.rb
index e97978e..1a302c7 100644
--- a/lib/game_server.rb
+++ b/lib/game_server.rb
@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+require_relative'context'
 require_relative 'models/map'
 require_relative 'models/chat_message'
 require_relative 'messages/game_info'
@@ -24,6 +25,21 @@ class GameServer
     )
   end
 
+  ##
+  # call_hook
+  #
+  # @param: hook_sym [Symbol] name of the symbol to call
+  # @param: context [Context] context object to pass on data
+  # @param: optional [Any] optional 2nd parameter passed to the callback
+  def call_hook(hook_sym, context, optional = nil)
+    @server.hooks[hook_sym].each do |hook|
+      hook.call(context, optional)
+      context.verify
+      return nil if context.canceld?
+    end
+    context
+  end
+
   def on_emoticon(chunk, _packet)
     message = ClEmoticon.new(chunk.data[1..])
     p message
@@ -69,6 +85,9 @@ class GameServer
     say = ClSay.new(chunk.data[1..])
     author = packet.client.player
     msg = ChatMesage.new(say.to_h.merge(client_id: author.id, author:))
+    context = Context.new(say, chunk:)
+    return if call_hook(:chat, context, msg).nil?
+
     puts msg.to_s
   end
 
diff --git a/lib/teeworlds_server.rb b/lib/teeworlds_server.rb
index aa4fab6..7f09941 100644
--- a/lib/teeworlds_server.rb
+++ b/lib/teeworlds_server.rb
@@ -59,6 +59,7 @@ end
 
 class TeeworldsServer
   attr_accessor :clients
+  attr_reader :hooks
 
   def initialize(options = {})
     @verbose = options[:verbose] || false
@@ -68,6 +69,13 @@ class TeeworldsServer
     @clients = {}
     @current_game_tick = 0
     @last_snap_time = Time.now
+    @hooks = {
+      chat: []
+    }
+  end
+
+  def on_chat(&block)
+    @hooks[:chat].push(block)
   end
 
   def run(ip, port)
diff --git a/server_sample.rb b/server_sample.rb
index 1abe7f2..609b2b7 100755
--- a/server_sample.rb
+++ b/server_sample.rb
@@ -4,4 +4,11 @@
 require_relative 'lib/teeworlds_server'
 
 srv = TeeworldsServer.new(verbose: false)
+
+srv.on_chat do |context, msg|
+  context.cancel
+
+  puts "[chat] #{msg.author.name}: #{msg.message}"
+end
+
 srv.run('127.0.0.1', 8303)