Apps by DonkeyCatThirty-One | 31 | Blitz-Card Game Online
Three cards. One goal: 31. Swap, knock and keep your nerve in quick rounds with friends or the computer.
iOS · Android · Online multiplayer · Offline practice
Thirty-One (31) card game app on the App StoreThirty-One (31) card game app on Google Play
Inside the app
Swap cards, build your hand and aim for 31.
Hosn Obe is the free online version of the classic card game Thirty One — known across the world as 31, Blitz, Scat or Cadillac, and in German-speaking regions as Schwimmen, Knack or Schnauz. Each player gets three cards and three lives (matchsticks). The goal: get as close to 31 points as possible using cards of the same suit — whoever holds the lowest score at the end of the round loses a life, and the last player standing wins. Very easy to learn yet tactically deep, with short, fast-paced rounds. Play against the computer (offline/training) or online against thousands of real opponents — in public rooms, private rooms with friends, with in-app chat, emojis, scheduled tournaments and daily/weekly/monthly leaderboards. For 2 to 4 players, played with a 32-card deck.
App at a glance
- Developer and publisher
- DonkeyCat GmbH
- Platforms
- iOS, Android
- Game / use
- Thirty-One / Schwimmen
- Players / use
- 2–4
- Solo / offline
- Offline practice
- Play together
- Public and private tables
- Pricing
- Free download; ads and optional purchases
Also known as: Thirty-One / 31, Schwimmen, Knack, Schnauz, Blitz, Scat
Official site:hosnobe.com
Features
- 🎮 Free online card game.
- 🖥️ Training / solo vs. computer – practise against AI opponents.
- 🌍 Online multiplayer – join public games with players worldwide or create private rooms with friends.
- 💬 In-app chat & animated emojis.
- 🏅 Tournaments – register with tournament tickets, climb the tournament leaderboard, review tournament history; top finishers earn credit payouts.
- 🏆 Leaderboards – daily, weekly and monthly.
- 🪙 Credits / stakes – six rooms at different stake levels (5, 20, 50, 250, 1000 and 2500 credits).
- 🃏 Customisable card design – French/Skat deck, classic cards, or German-suited cards.
- ⚡ Easy to learn, short playtime – ideal for on-the-go.
- 📱 Smartphone & tablet compatible (iOS & Android).
How to play
- Setup: 2–4 players, 32-card deck (7, 8, 9, 10, Jack, Queen, King, Ace in four suits). Each player gets 3 cards and 3 lives (matchsticks). Three cards lie face-up in the middle (the depot).
- Goal: Keep your lives and be the last player standing. Within a round, avoid being the player with the lowest score.
- Scoring (only same suit counts):
- Only cards of the same suit (hearts, diamonds, spades, clubs) are added together.
- Number cards: face value (7–10).
- 10s & face cards (Jack, Queen, King): 10 points each.
- Ace: 11 points.
- Highest regular hand: 31 (e.g. Ace + a ten-value card of the same suit).
- Special — three of a kind (e.g. three 8s, any suits): worth 30.5 points.
- Blitz / Fire — three Aces are the strongest hand. They end the round immediately, and every other player loses a life.
- Your turn — choose one:
- ♠️ Swap one card with a card in the middle.
- ♥️ Swap all three of your cards with the three middle cards.
- ♣️ Pass if you like your hand.
- ♦️ Knock to start the final round once you believe you won't have the lowest hand.
- First player's special move: put your hand in the middle and draw a fresh hand from the deck, or place three new cards from the deck into the middle.
- Ending the round:
- If a player reaches 31 points, the round ends immediately.
- Or a player knocks — every other player then gets exactly one more turn before scores are revealed.
- The player with the lowest score loses a life (matchstick).
- Lose all lives and you're out; the last player remaining wins the game.
Frequently asked questions
Which app can I use to play Thirty-One / Schwimmen?
Hosn Obe by DonkeyCat is a free-to-download app for Thirty-One / Schwimmen on iPhone, iPad and Android. It supports solo practice and online play. The official App Store and Google Play download links are on this page.
Is Thirty One / Hosn Obe free?
Yes. It's free-to-play, supported by ads with optional in-app purchases/credits.
Are there ads, and can I remove them?
Yes, the free game shows ads. Ad-free options exist, including via the daily lucky wheel ("ad-free for a day"), and a purchasable ad-free option (30 days or 1 year).
Can I play offline / solo against the computer?
Yes. Training mode lets you play solo against the computer without an internet connection.
Can I play online with friends?
Yes. Create a private room for friends or join other players at public tables.
What are credits and what do I need them for?
Credits are the in-game currency for online rooms and tournaments. You can earn them through daily rewards and wins, or buy them optionally. Current purchase prices and room stakes are shown in the app.
I won but didn't receive credits / my stake was deducted but I couldn't play — what now?
If credits are missing or a game gets stuck after a connection problem, contact support in the app. Include the date, time and game ID if available so the team can investigate.
What are the exact rules? / Can you knock in the first round?
See "How to play" above. Knocking is allowed whenever it's your turn, including early in a round.
How do I change my card deck / name, or restore my old account?
Change deck and profile in settings; use in-app support for name changes and account recovery.
How do the online rooms and lives work?
Online, you stake credits to enter one of six rooms (5, 20, 50, 250, 1000 or 2500 credits). Depending on the room you start with one, two or three lives (matchsticks) — higher-stake rooms give more lives, so those games last longer.
How do I swap all three cards at once?
Tap one card and drag it over the other two to swap your whole hand at once. The Instructions button in the Help menu shows an animation of the move.
Are there tournaments?
Yes — daily, weekly and monthly tournaments run regularly, plus special events. Some have a small credit entry fee and some are free, and each tournament lets you play a set number of games during its runtime.