Comparison

Bluff Game vs Zero21 Card Game

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Bluff Game

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Game Purpose: To win the game; you must be the only one who plays out his cards first or still has chips to play. If your chips are over, you will lose the game. How to Play? This game is played with four people. A total of 52 cards in the deck is dealt to the players in equal numbers. The players begin to the game with 13 pieces of card and equal chips depending on the price of table. The player who will start the game determine the quantity of chips and rank of the cards (Trump) for the cards he will discard (at least one piece, maximum 4 pieces) (i.e 8, 3, J, Q) Turn passes to the next player. The next player has three choices: 1- He may say Pass. The chips in the quantity corresponding to the price of pass are blocked in the safe box. Safe box: Blocked chips box for the winner. 2- He may say Bluff! Two different results may arise when the player cleared away the last discarded cards. a) In case discarded cards are different from declared cards.( i.e. Bluff) The chips of the player discarded cards in the quantity that corresponds to the price of the cards are blocked in the safe box. The player last discarded cards retakes them into his hands. The player catching the bluff get the right to determine new trump. b) In case discarded cards are the same with declared cards.( i.e. not Bluff) The quantity of chips that was assigned by the player for the cards he discarded is blocked in the safe box by being taken from the player who cleared away the cards. The next player continues the game from the same trump and chips. 3- He may discard a card. The quantity of chips corresponding to the price of the last discarded cards is returned to his owner. He had to support the cards that he discarded as much as the minimum quantity of chips corresponding to the price of the last card. He may also support with more quantity of chips. He may discard at least 1 card, maximum 4 cards. The next player continues the game from the same trump and chips. To obtain the right of trump determination; you are supposed to catch bluffing or to be the player throwing the last card(everybody has said pas). Bluff Game is played with a deck of playing cards. There are only four pieces from each card in this deck. For example; four pieces of two, four pieces of three, four pieces of four etc. If you're lucky enough, you may have four pieces from the same card. This means that, nobody else has this card! If you determine this card as a trump, when anybody throws a card after you, you can easily catch his bluff. Since you will not always be so lucky, you have to follow the trumps in the game strictly and thrust your own intuitions.

About

Zero21 Card Game

This number puzzle game challenges you to keep your score between 0 and 21 by collecting cards. Utilize power-up cards and strategic choices to navigate diverse levels and daily challenges. It's a fun, relaxing way to train your brain.

Highlights
  • Keep score between 0 and 21
  • Collect number cards
  • Use power-up cards
  • Unlock new card collections
  • Daily challenges
  • Diverse card layouts
Features
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"ZERO21 CARD GAME Zero21 Card Game is a number games with solitaire card. It is fun, relax but helps to train your brain. ***HOW TO PLAY*** The game rule is simple: Try to stay between 0 and 21. - Collect the number card on the board - Choose the right one to keep the sum lower than 21 and greater than 0 - Use the power up cards to help you solve this math game ***FEATURES*** - PICK YOUR STYLE: Many unique stylish card collections for your choice to play to keep things fresh everyday. - AMAZE IN EVERY LEVEL: Diversity card layouts at each level let the game more interesting. - FINISH DAILY CHALLENGE to unlock new card collections. - Golden card keeps your current number at the golden one. - See the next number with forseen card. - Hold button help to keep the card for the next move. - Remove the unused card with Delete button. You should not miss this mathgame because it is TOTALLY FREE and help you BE SMARTER everyday!

Screenshots

Bluff Game4 screens
Zero21 Card Game4 screens

Verdict

The call

The clearest difference is in-app purchases: Zero21 Card Game at none against Bluff Game's 4. Bluff Game's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 65 months). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Bluff Game sells 4 one-off in-app purchases. Zero21 Card Game asks for nothing beyond the download.

UpkeepUpdate frequency

Bluff Game ships an update every 6 weeks, Zero21 Card Game every 65 months. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 6 level
Bluff Game versus Zero21 Card Game: the parameters behind the verdict, then further details
ParameterBluff GameZero21 Card Game
PriceFreeFree
Rating—4.0 (3 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 6 weeks — betterEvery 65 months
AdsNo — betterYes
In-app purchasesYesNo — better
Monetization—Ad-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.6
Further details — not scored
Size77 MB58 MB
Age rating17+4+
DeveloperMELLONX MEDYA YAZILIM ANONIM SIRKETILe Nhung

In-app purchases

4 purchases

Bluff Game

One-time4
  • Chip 50K$1.99
  • Chip 275K$9.99
  • Chip 720K$24.99
Show 1 more
  • Chip 2800K$89.99
None

Zero21 Card Game

No in-app purchases

Questions

Is Bluff Game free?
Bluff Game is free to download, with in-app purchases available.
Is Zero21 Card Game free?
Zero21 Card Game is free to download, with no in-app purchases.
Do Bluff Game or Zero21 Card Game have ads?
Zero21 Card Game shows ads; Bluff Game does not.
Which is updated more often, Bluff Game or Zero21 Card Game?
Bluff Game ships an update every 6 weeks, and Zero21 Card Game every 65 months. Most recently, Bluff Game was updated on October 13, 2026 and Zero21 Card Game on October 14, 2026.

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