Comparison

Block Tower Online vs playing cards Doubt

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

Head to head
About

Block Tower Online

A simple balance game where players take turns removing blocks without toppling the character on top. Compete with friends online or against AI opponents.

Highlights
  • Online multiplayer with friends
  • AI opponent for practice
  • Simple block removal gameplay
  • Character and block customization
  • Rating system for competitive play
Features
Read full description

Want to have a quick game with friends to pass the time. Let's play with [Block Tower Online] in such a case! Because it's online, you don't have to be in the same place to play against each other. And the rules are simple! No difficult controls! [How to play] Basic rules:.  You lose if you drop the person at the top.  Take turns to erase blocks while maintaining balance so as not to drop the person on top.  If you can eliminate at least one block, it is your opponent's turn.  If the player on top falls on his/her turn, he/she loses. Coins:.  You will receive coins at the end of the game for erasing blocks.  Use the coins to get characters and blocks! Random Matchups:.  You can play against someone somewhere online.  (If you are not matched within a certain time frame, you may be put into a bot match.) Aikotoba Match: Aikotoba Match  You can play together with your friends by making a password. CPU Game: You can play against the CPU.  Practice against the bot as much as you like. Ratings  The rating goes up or down depending on the win or loss of a random match.  (It does not fluctuate in the Aikouji and CPU matches.)

About

playing cards Doubt

Experience a classic card game where players try to be the first to empty their hands by playing cards in sequence. Strategize with lies and deductions to outwit your opponents. This digital version offers streamlined gameplay for quick fun with family and friends.

Highlights
  • Play the classic 'Doubt' card game
  • Lie and bluff to eliminate cards
  • Detect opponents' lies
  • Adjust game settings (cards, wait time)
  • Track game records (wins, doubts)
  • Includes rule explanations
Features
Read full description

【overview】 It is an application that you can play the card game "Doubt". Play cards in order of 1, 2, 3, and so on, and compete to eliminate your hand. You can put out 1 to 4 cards face down, but you can lie and include a different card. If you are caught lying, you will be penalized, but if no one points it out, the game will continue. It is important to lie well and get rid of unnecessary cards, and to detect the lies of your opponent. Doubt means to doubt in English. As the name suggests, in this game it is important to suspect your opponent and detect lies. It's a simple game, so anyone can play it, and in Japan, it's a popular standard game that can be played as a party game with family and friends from adults to children. It is also known as a game that takes a very long time because the discarded cards are returned when you doubt. This app shortens the game by reducing the number of playing cards used and ending the game as a loss even if there are too many cards in hand. 【function】 ・There is an easy-to-understand explanation of the rules, so even people who don't know how to play can start. ・A mark is attached to the card with the number to be played. - You can set the number of cards to use. - You can set the waiting time for doubts. ・You can see the records such as the number of wins and the number of doubts. [Operation instructions] Tap your hand to select it, and press the use button to issue a card. When you take out the card, you will enter the waiting time where you can dodge for a certain period of time. When your opponent plays a card, you can press the Doubt button to declare a Doubt. 【price】 You can play all for free.

Screenshots

Block Tower Online4 screens
playing cards Doubt4 screens

Verdict

The call

The clearest difference is review sentiment: playing cards Doubt at 100% against Block Tower Online's 64%. Block Tower Online's advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 15 months). On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Block Tower Online ships an update every 5 weeks, playing cards Doubt every 15 months. The most recent releases landed on October 27, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 4 level
Block Tower Online versus playing cards Doubt: the parameters behind the verdict, then further details
ParameterBlock Tower Onlineplaying cards Doubt
PriceFreeFree
Positive reviews63.6% of reviews100.0% of reviews — better
Update frequencyEvery 5 weeks — betterEvery 15 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size212 MB56 MB
Age rating4+4+
DeveloperChar RoomJun Koizumi

Customer experience

Block Tower Online

Written reviews11 reviews
Positive63.6%
Neutral9.1%
Negative27.3%

playing cards Doubt

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Block Tower Online

No in-app purchases

None

playing cards Doubt

No in-app purchases

Questions

Is Block Tower Online free?
Block Tower Online is free to download, with no in-app purchases.
Is playing cards Doubt free?
playing cards Doubt is free to download, with no in-app purchases.
Do Block Tower Online or playing cards Doubt have ads?
playing cards Doubt shows ads; Block Tower Online does not.
Which is updated more often, Block Tower Online or playing cards Doubt?
Block Tower Online ships an update every 5 weeks, and playing cards Doubt every 15 months. Most recently, Block Tower Online was updated on October 27, 2026 and playing cards Doubt on October 6, 2026.

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