Comparison

Summon Busters vs REXER:Diagonal Strategy

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

Head to head
About

Summon Busters

Engage in a deck-building rogue-like where you summon diverse characters to battle abstract "Concepts". Strategically choose from three random characters, collect items to enhance them, and build unique decks across 20 stages to achieve victory.

Highlights
  • Deck-building rogue-like gameplay
  • Summon over 60 characters
  • Collect and use 45 items
  • Strategic character enhancement
  • 20 stages of combat
  • Create original concept decks
Features
Read full description

Summon Busters is a deck-building rogue-like game where you use summoning magic to call upon a variety of characters, such as the Demon Lord, Hero, Sage, and Phoenix, to defeat the "Concepts". Choose one character out of three randomly selected every time to create your own ultimate deck list. The gameplay is simple. Press the play button, pick a character (one out of three), retire unnecessary characters, and collect lots of items to buff up your characters. Then, defeat different concepts on each stage and aim for the final stage (20 stages)! There are over 60 characters you can summon, 45 items, and 7 legendary items. Create original concept decks, such as decks that increase attack power by combining the same characters or decks that focus on nurturing specific characters. In addition, we are developing a lot of additional content! New characters, items, and more will be added as appropriate. Download Summon Busters now and build the strongest deck! BGM: https://musmus.main.jp/info.html

About

REXER:Diagonal Strategy

Features
Read full description

REXER features very simple rules. Anyone can start playing right away. 【Rules】 Piece Movement • Pieces move diagonally. • The King cannot be moved consecutively. • You can remove an opponent’s piece by trapping it between your pieces. You win by meeting any of the following conditions: • Capture the opponent’s King. • Move your King into the enemy territory. • Reduce the opponent’s pieces to one or fewer. 【Scoring】 Score is available in single-player (vs CPU). ◆ Remove enemy pieces 1 piece: 100 pts 2 pieces at once: 500 pts 3 pieces at once: 1500 pts 4 pieces at once: 3000 pts 5 pieces at once: 5000 pts 6 or more at once: 10000 pts ◆ Piece difference at victory +100 pts for each piece difference ◆ Bonuses • Capture the opponent’s King: +2000 pts • Win without losing any pieces: +3000 pts Higher CPU difficulty grants more score. Strong x2 score Strongest x3 score

Screenshots

Summon Busters3 screens
REXER:Diagonal Strategy4 screens

Verdict

The call

The clearest difference is update cadence: REXER:Diagonal Strategy at daily against Summon Busters's every 2 weeks. Summon Busters's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Summon Busters ships an update every 2 weeks, REXER:Diagonal Strategy daily. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 7 level
Summon Busters versus REXER:Diagonal Strategy: the parameters behind the verdict, then further details
ParameterSummon BustersREXER:Diagonal Strategy
PriceFreeFree
Rating4.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeksDaily — better
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.0 — better15.0
Further details — not scored
Size128 MB152 MB
Age rating17+4+
DeveloperKeisuke TanakaKoji Murakami

In-app purchases

None

Summon Busters

No in-app purchases

None

REXER:Diagonal Strategy

No in-app purchases

Questions

Is Summon Busters free?
Summon Busters is free to download, with no in-app purchases.
Is REXER:Diagonal Strategy free?
REXER:Diagonal Strategy is free to download, with no in-app purchases.
Do Summon Busters or REXER:Diagonal Strategy have ads?
Both Summon Busters and REXER:Diagonal Strategy show ads.
Which is updated more often, Summon Busters or REXER:Diagonal Strategy?
Summon Busters ships an update every 2 weeks, and REXER:Diagonal Strategy daily. Most recently, Summon Busters was updated on October 7, 2026 and REXER:Diagonal Strategy on October 9, 2026.

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