Comparison

zMahjong 2 Concentration vs Stack & Blast

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

Head to head
About

zMahjong 2 Concentration

This game tests your focus by requiring you to find and remove matching tiles based on a randomly selected reference tile. It offers a challenging experience that is harder than it initially appears, with multiple language options and leaderboards.

Highlights
  • Match identical tiles to the reference tile
  • Remove all matching tiles before removing the reference
  • Randomly selected reference tile each round
  • Supports multiple languages
  • Game Center leaderboards
  • Landscape mode for larger display
Features
Read full description

Thank you for viewing! Thank you for downloading! Zhongyuan Mahjong 2 (Concentration) is a game that challenges your concentration! Everyone believes that he/she can complete this game easily; But they soon realize that its difficulty is far beyond their imagination! ---------------------------- Introduction of Zhongyuan Mahjong 2 (Concentration) *****Game goal *Find out and remove all same tiles as the reference tile as quickly as possible. *****Game rules *One tile is chosen as the reference tile randomly each time. *You are to find out and remove all same tiles as the reference tile. *After having removed all same tiles, tap to remove the reference tile. *Repeat until all tiles are removed. *****Note: Before games starts, 38 tiles have been chosen and removed, randomly. *****Please see screenshots. *Others *Supports Chinese, English, Japanese, Traditional Chinese, French, German, Italian, Dutch, Spanish, Russian and Swedish. *Supports leaderboards in Game-Center. *Supports landscape to enlarge display.

About

Stack & Blast

Features
Read full description

Drop blocks. Build groups. Blast them off the board. Stack & Blast is a puzzle game with a twist: when same-color blocks form a big enough group, they detonate — and every surrounding block gets pushed outward. One blast triggers another, combos multiply your score, and the board reshuffles with every explosion. It's easy to learn but impossible to put down. THREE WAYS TO PLAY Classic Mode No timer, no pressure. Place pieces from a tray of three, build same-color clusters, and trigger blasts. The catch? The blast threshold rises as your score climbs — so the better you play, the harder it gets. How far can you go? Daily Challenge 60 seconds. Same puzzle for every player, worldwide. The pieces are identical for everyone each day, so the leaderboard is pure skill. Come back tomorrow for a fresh challenge. Blast Rush 90 seconds on the clock, but every blast adds 5 more. Chain reactions keep the timer alive. Play fast, think ahead, and ride the combos as long as you can. THE PUSH MECHANIC This is what makes Stack & Blast different. When a group blasts, adjacent blocks don't just disappear — they get pushed away. Pushed blocks can collide with others, creating chain reactions. Blocks shoved off the edge are gone for good. Every move reshapes the board. POWER-UPS A special block spawns every 8 pieces. Trigger it in a blast to unleash its effect: - Row Blast: Wipes an entire row clean - Column Blast: Clears a full column top-to-bottom - Color Bomb: Removes ALL blocks of one color from the board CASCADING COMBOS When a blast pushes blocks into new matching groups, a cascade begins. Each cascade level doubles your score multiplier. The audio builds with every level — a single ping becomes a full chord. Chase the chain. YOUR BOARD, YOUR RULES Pick your grid size: 8x8 for intense, tight play or 12x12 for sprawling strategic setups. 9x9 and 10x10 sit in between. Blast thresholds scale automatically. UNLOCK 6 VISUAL THEMES Earn new block skins by playing: Neon, Pastel, Retro, Monochrome, and the elusive Galaxy theme. No purchases required — every skin is unlocked through gameplay milestones. BUILT FOR COMFORT - Colorblind mode with unique shape symbols on every block - Haptic feedback you can feel on every placement and blast - Procedurally-generated audio with warm, satisfying tones - All settings toggleable: sound, haptics, accessibility - Dark theme throughout — easy on the eyes BOMB CONTINUE Game over? Watch a short video to drop a bomb that clears a 6x6 area. Pick your target, blast through the clutter, and keep your run alive. TRACK YOUR PROGRESS Lifetime stats show total games played, blasts triggered, pieces placed, best combo, and highest single-game score. High scores are tracked per mode. Download Stack & Blast and find out how long you can keep the chain going. Privacy Policy: https://geba89.github.io/stackandblast-web/privacy/ Terms of Use: https://geba89.github.io/stackandblast-web/terms/

Screenshots

zMahjong 2 Concentration4 screens
Stack & Blast4 screens

Verdict

The call

The clearest difference is price: Stack & Blast at Free against zMahjong 2 Concentration's $0.99. Stack & Blast also leads on update cadence (every 3 days vs every 4 months). zMahjong 2 Concentration's advantage is ads (none vs shown) and device support (4 vs 1). On in-app purchases 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

Stack & Blast is free to download; zMahjong 2 Concentration costs $0.99 up front. zMahjong 2 Concentration sells 3 one-off in-app purchases and Stack & Blast sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

zMahjong 2 Concentration ships an update every 4 months, Stack & Blast every 3 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
zMahjong 2 Concentration versus Stack & Blast: the parameters behind the verdict, then further details
ParameterzMahjong 2 ConcentrationStack & Blast
Price$0.99Free — better
Rating3.4 (5 ratings) — better—
Positive reviews52.9% of reviews—
Number of ratings5 — better—
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationPaid—
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size30 MB7 MB
Age rating4+4+
DeveloperShen ZhongyuanPiotr Gebski

In-app purchases

3 purchases

zMahjong 2 Concentration

One-time3
  • 100$0.99
  • 200$1.99
  • 300$2.99
5 purchases

Stack & Blast

One-time5
  • 500 Coins$0.99
  • Neon Skin Bundle$1.99
  • Remove Ads$2.99
Show 2 more
  • 3,000 Coins$3.99
  • Starter Bundle$4.99

Questions

Is zMahjong 2 Concentration free?
zMahjong 2 Concentration costs $0.99, and also offers in-app purchases.
Is Stack & Blast free?
Stack & Blast is free to download, with in-app purchases available.
Do zMahjong 2 Concentration or Stack & Blast have ads?
Stack & Blast shows ads; zMahjong 2 Concentration does not.
Which is updated more often, zMahjong 2 Concentration or Stack & Blast?
zMahjong 2 Concentration ships an update every 4 months, and Stack & Blast every 3 days. Most recently, zMahjong 2 Concentration was updated on October 30, 2026 and Stack & Blast on October 25, 2026.

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