Comparison

No Proper Thief vs Diabolical

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

Head to head
About

No Proper Thief

Embark on a thrilling bank heist where your decisions shape your survival and fortune. Navigate complex relationships with your crew and a captivating bank manager, facing consequences for every choice. Can you escape the chaos and get rich?

Highlights
  • Branching narrative choices
  • Team management
  • Relationship building
  • Consequence-driven gameplay
  • Multiple endings
  • Interactive fiction
Features
Read full description

Attempt to survive your first bank heist! Befriend or betray your team of bank robbers, make difficult choices, survive, go insane, fall in love, and get rich if you can in No Proper Thief, where every choice you make has a consequence. You never wanted a life of crime, but it's all you know. That doesn't mean transitioning from a life as a cocky con artist to a greenhorn bank robber doesn't scare you. In No Proper Thief you are Clyde Lamm, the Rooster, and you have a choice to make. In fact, you have dozens of choices to make throughout your upcoming adventure. Everything has consequences, too. You and your team, consisting of the leader Zebra, the muscle Stag, and the heart Marlin, have many obstacles to overcome. Still, in the midst of all the dark chaos of the initial robbery, there is a flame of positivity: an attractive young bank manager. Sure you stole her gold heirloom ring a while back, but it's a fair trade because that fox is stealing your heart. Can you make the hard choices and survive your first bank heist?

About

Diabolical

Become the ultimate criminal mastermind in this text-based interactive novel. Make choices to build an evil empire, hire minions, and achieve world domination, or destruction. Explore different villain archetypes and romance options.

Highlights
  • Choose your villainous path
  • Hire and manage minions
  • Make impactful story choices
  • Develop your evil empire
  • Explore romance options
  • Achieve world domination or destruction
Features
Read full description

Start practicing your evil laugh! As the world's greatest criminal mastermind, choose a lair, hire a minion, and steal the world's largest ball of aluminum foil! (Or, destroy the world. FINE.) "Diabolical" is a 130,000-word interactive novel by Nick Aires, where your choices control the story. It's entirely text-based--without graphics or sound effects--and fueled by the vast, unstoppable power of your imagination. Famous, feared, or filthy rich—why not all three? You've got the money and the motives to build an evil empire worthy of the most ruthless villain the world has ever seen. Crush the good guys and terrorize the populace! Stamp a big red "FAIL" on your enemies' foreheads! Plunder your way to world domination – or sit back and pet your kitty while your henchmen do it for you. Will you be a high-tech daredevil, a ruthless military soldier, or an apparition terrifying to behold? What calling card will you leave at the scene of your crimes? Whatever your choices, the results will be diabolical. • Play a villainous story of scheming, grandstanding, and laughing evilly. • Interview and hire the best possible (or best available) minion. • Decide when to use trickery, when to use force, and when to hide behind henchmen. • Choose the ultimate, guaranteed-to-be-infamous nickname. • Play as male or female, with straight, gay, and bisexual romance options. • Destroy the world!

Screenshots

No Proper Thief4 screens
Diabolical4 screens

Verdict

The call

The clearest difference is rating: Diabolical at 4.1 against No Proper Thief's 3.8. Diabolical also leads on review sentiment (77% vs 57%). On price, ratings volume, update cadence and ads 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. No Proper Thief sells 1 one-off in-app purchase and Diabolical sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Diabolical holds the better App Store score, 4.1 against 3.8. Both are backed by a comparable volume of ratings — 26 and 45 respectively. Written reviews point the same way: 57% of No Proper Thief's written reviews are positive against 77% of Diabolical's.

UpkeepUpdate frequency

No Proper Thief ships an update every 22 months, Diabolical every 13 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard2 real differences · 8 level
No Proper Thief versus Diabolical: the parameters behind the verdict, then further details
ParameterNo Proper ThiefDiabolical
PriceFreeFree
Rating3.8 (26 ratings)4.1 (45 ratings) — better
Positive reviews57.1% of reviews77.0% of reviews — better
Number of ratings2645 — better
Update frequencyEvery 22 monthsEvery 13 months — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size29 MB30 MB
Age rating12+12+
DeveloperHosted Games LLCChoice of Games LLC

Customer experience

No Proper Thief

All ratings26 ratings
Positive65.4%
Neutral11.5%
Negative23.1%
Written reviews7 reviews
Positive57.1%
Neutral28.6%
Negative14.3%

Diabolical

All ratings45 ratings
Positive75.6%
Neutral6.7%
Negative17.8%
Written reviews61 reviews
Positive77.0%
Neutral6.6%
Negative16.4%

Bugs and requests

No Proper Thief

Not enough reviews yet to summarise bugs or requests.

Diabolical

Reported bugs

1 issue
  • Bug fix???

Requested features

14 requests
  • Sequel needed
  • More like this game
  • Werewolf story
  • More choices that affect story
  • Choice of alien game
Show 9 more
  • More vs hero interaction
  • Longer battles
  • More villain POV things
  • Improved sequel
  • More customization (lairs, sidekicks, stats)
  • More interactive than other gamebooks
  • More improvements to character development
  • More content like this
  • More interactive releases

In-app purchases

1 purchases

No Proper Thief

One-time1
  • Rest of the Game$3.99
1 purchases

Diabolical

One-time1
  • Chapters 3 through 12$4.99

Questions

Is No Proper Thief free?
No Proper Thief is free to download, with in-app purchases available.
Is Diabolical free?
Diabolical is free to download, with in-app purchases available.
Which has better reviews, No Proper Thief or Diabolical?
Diabolical is rated higher. No Proper Thief averages 3.8 out of 5 from 26 ratings, while Diabolical averages 4.1 from 45 ratings.
Do No Proper Thief or Diabolical have ads?
Both No Proper Thief and Diabolical show ads.
Which is updated more often, No Proper Thief or Diabolical?
No Proper Thief ships an update every 22 months, and Diabolical every 13 months. Most recently, No Proper Thief was updated on October 24, 2026 and Diabolical on October 22, 2026.

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