diff --git a/requirements.txt b/requirements.txt
index c6e6dcf..4ff3b91 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,6 @@
 bidict==0.22.1
+certifi==2022.12.7
+charset-normalizer==3.0.1
 click==8.1.3
 colorama==0.4.6
 dnspython==2.3.0
@@ -6,10 +8,13 @@ eventlet==0.33.3
 Flask==2.2.2
 Flask-SocketIO==5.3.2
 greenlet==2.0.2
+idna==3.4
 itsdangerous==2.1.2
 Jinja2==3.1.2
 MarkupSafe==2.1.2
 python-engineio==4.3.4
 python-socketio==5.7.2
+requests==2.28.2
 six==1.16.0
+urllib3==1.26.14
 Werkzeug==2.2.2
diff --git a/venture/app.py b/venture/app.py
index 7b290e8..a973cf3 100644
--- a/venture/app.py
+++ b/venture/app.py
@@ -1,22 +1,14 @@
 from flask import Flask, request
 from flask_socketio import SocketIO, emit, join_room, rooms
+import requests
 
 from gencode import make_code
 from game import Game
 
-games = {}
-
 app = Flask('venture')
 socketio = SocketIO(app, cors_allowed_origins="*")
 
-def with_game(listener):
-    global games
-    room = rooms()[1]
-    game = games[room]
-    def inner(event, data={}):
-        data['game'] = game
-        listener(game, data)
-    return inner
+games = {}
 
 @socketio.on('new-game')
 def on_newgame():
@@ -26,6 +18,8 @@ def on_newgame():
     join_room(code)
     emit('set-code', {'code': code})
 
+## Contestant
+
 @socketio.on('contestant-join')
 def on_join_contestant(data):
     sid = request.sid
@@ -35,6 +29,23 @@ def on_join_contestant(data):
     games[room].add_contestant(sid, signature)
     emit('contestant-joined', {'sid': sid, 'signature': signature }, to=room)
 
+## Host
+
+@socketio.on('host-join')
+def on_join_host(data):
+    sid = request.sid
+    room = data['room']
+    join_room(room)
+    games[room].add_host(sid)
+    emit('host-joined', {'sid': sid}, to=room)
+
+@socketio.on('host-start')
+def on_host_start():
+    room = rooms()[0]
+    game = games[room]
+    game.get_questions()
+    emit('categories', [c.name for c in game.categories[:6]], to=room)
+
 def main():
     socketio.run(app, host='0.0.0.0', debug=True)
 
diff --git a/venture/game.py b/venture/game.py
index 128a3f2..4c41991 100644
--- a/venture/game.py
+++ b/venture/game.py
@@ -1,13 +1,54 @@
-class Game:
-    def __init__(self, code):
-        self.code = code
-        self.locked = True
-        self.players = {}
-    def add_contestant(self, sid, signature):
-        self.players[sid] = Contestant(signature)
-
-class Contestant:
-    def __init__(self, signature):
-        self.signature = signature
-        self.points = 0
-        
+import requests
+from random import randrange
+MAX_CATEGORIES = 28100
+
+class Game:
+    def __init__(self, code):
+        self.code = code
+        self.locked = True
+        self.players = {}
+        self.categories = []
+    def add_contestant(self, sid, signature):
+        self.players[sid] = Contestant(signature)
+    def add_host(self, sid):
+        self.host = sid
+    def get_questions(self):
+        while len(self.categories) < 12:
+            category_id = randrange(MAX_CATEGORIES)
+            r = requests.get('https://jservice.io/api/category?id=%d' % category_id)
+            j = r.json()
+            category = check_and_build_category(j)
+            if category:
+                self.categories.append(category)
+        
+class Contestant:
+    def __init__(self, signature):
+        self.signature = signature
+        self.points = 0
+
+class Category:
+    def __init__(self, name):
+        self.name = name
+        self.questions = []
+
+class Question:
+    def __init__(self, value, question, answer):
+        self.value = value
+        self.question = question
+        self.answer = answer
+
+def check_and_build_category(j):
+    if not j or not j['title'] or not j['clues_count'] or j['clues_count'] < 5:
+        return None
+    category = Category(j['title'])
+    questions = [Question(c['value'], c['question'], c['answer']) for c in j['clues']]
+    for value in [200, 400, 600, 800, 1000]:
+        for question in questions:
+            if question.value == value:
+                category.questions.append(question)
+                break
+    if len(category.questions) == 5:
+        return category
+    else:
+        return None
+