Comparison

Castrum vs Klyx

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

Head to head
About

Castrum

Develop a fortified village in 13th-century Occitania to defend against crusaders and aid pursued Cathars. Explore Cathar Country, collect items, and craft resources to preserve local culture. Engage in mini-games at historical monuments for unique rewards.

Highlights
  • Develop a fortified village
  • Collect and craft items
  • Explore Cathar Country
  • Geotagged mini-games at monuments
  • Historical narrative
  • Unlock legendary tools
Features
Read full description

You are a faidit, a rebel Occitan lord from the 13th century. Develop your castrum - a fortified village - to face off the attacks of your adversaries, the crusaders and offer a refuge to the pursued Cathars. With the help of your faithful friends, cross Cathar Country in search of items that you will be able to combine in your WORKSHOP to save the Occitan culture from destruction. Castrum offers you: - A HISTORY mode, playable anywhere at any time, during which you collect items to develop your castrum. - A MONUMENT mode, playable only during your visit to the monuments of Aude, which lets you play geotagged mini games. You will need to visit 5 monuments to complete your quest. Over the course of the adventure, you will be able to: - Collect 54 items and craft close to 200 with them; - Go into your INVENTORY to discover the items to craft; - Win surprise rewards by visiting the 20 Cathar country monuments. During your visit, you must complete 5 mini games: if you succeed, you unlock a legendary tool which is added to your collection. Some examples of mini games: - Catapult game: destroy the fortresses by discovering their weak points - Flute Hero: play medieval melodies in time - Matching game: find the right combinations - Shooting game: eliminate your enemies via 360° immersion in the monuments - The source of sign language: learn to speak like the monks of the Middle Ages Castrum gives you the chance to immerse yourself in lavish settings by visiting the 20 Cathar country monuments off the beaten track, in the company of characters associated with the history of the Aude département. The 20 monuments of Cathar country: 10 CASTLES Aguilar castle Arques castle Montségur castle Peyrepertuse castle Puilaurens castle Quéribus castle Saissac castle Termes castle Villerouge-Termenès castle Lastours castle 7 ABBEYS Alet-les-Bains abbey Caunes-Minervois abbey Fontfroide abbey Lagrasse abbey Saint-Hilaire abbey Saint-Papoul abbey Villelongue abbey 2 MEDIEVAL SITES Castles and ramparts of the city of Carcassonne Medieval city of Fanjeaux 1 MUSEUM Quercorb museum Who are the Cathars? Appearing around the year 1000, Catharism was a dissident Christian religion, originating from the East, particularly influential around Toulouse, Carcassonne, Béziers and Albi. The region therefore became a refuge for the Cathars when the Church pursued them during the Albigensian crusade, all the way to the heights of Montségur. It is this saga that the castles of Cathar country recount.

About

Klyx

Experience immersive multiplayer escape rooms in Augmented Reality. Analyze environments, find clues, and solve puzzles to complete unique missions. Play solo or with friends in this challenging AR adventure.

Highlights
  • Multiplayer AR escape rooms
  • Analyze environments and search for clues
  • Solve enigmas and riddles
  • Host and join private games
  • Hints available
  • Original music tracks
Features
Read full description

Play a whole new multiplayer escape room game in Augmented Reality. Live a unique and immersive experience going through the mission. Analyze the environment, search for clues, solve piles of enigmas and riddles to win the game. Are you absolutely sure you can solve all the riddles and crack all the codes to finish the mission? If you are fully certain that you have got what it takes, start this amazing challenge NOW and put your Sherlock’ skills to the test. Each room has a unique storyline, specific and exciting mission. You have to complete every task in order to succeed. Think, observe, guess, connect clues! Features Online multiplayer AR game. Host and join private games with in-game chat. A variety of fun puzzles and tricky riddles, all in AR immersive action. Hints are available so don’t worry about getting stuck. Original music tracks. How to play: Browse and select your mission. Play solo, host or join the game with your friends. Go AR, scan the floor, place the environment and enter the inter- dimensional portal. Discover the environment, observe, analyze, find the clues to solve the puzzles and succeed the mission. Have fun. Terms of Use By using this application, you agree to be bound by our Terms of use: https://www.arvisiongames.com/en/content/terms-of-use and Privacy Policy : https://www.arvisiongames.com/en/content/privacy-policy. Continued use of the app constitutes acceptance of these terms. For subscription services, this application adheres to the standard Apple End User License Agreement (EULA). For any questions or concerns, please contact our support team at info@arvisiongames.com. If you have any questions or concerns, please contact our support team at info@arvisiongames.com.

Screenshots

Castrum4 screens
Klyx4 screens

Verdict

The call

The clearest difference is review sentiment: Klyx at 100% against Castrum's 41%. Klyx also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (15.0 vs 18.0). Castrum's advantage is in-app purchases (none vs 15). On price, ads 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. Klyx sells 15 in-app purchases, starting at $1.99 per month. Castrum asks for nothing beyond the download.

UpkeepUpdate frequency

Castrum ships an update every 2 months, Klyx fortnightly. The most recent releases landed on September 6, 2026 and September 11, 2026 respectively.

Scorecard5 real differences · 5 level
Castrum versus Klyx: the parameters behind the verdict, then further details
ParameterCastrumKlyx
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews40.9% of reviews100.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size1.4 GB413 MB
Age rating4+9+
DeveloperDEPARTEMENT DE L AUDEARVision Games Inc

Customer experience

Castrum

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews22 reviews
Positive40.9%
Neutral9.1%
Negative50.0%

Klyx

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Castrum

No in-app purchases

15 purchases

Klyx

Subscriptions5
  • Standard Plan$1.991 Month
  • Premium (1-Month)$2.991 Month
  • Save The Cup Series$6.991 Year
Show 2 more
  • Yearly Standard Plan$19.991 Year
  • Premium Plan (1-Year)$29.991 Year
One-time10
  • Anubis$2.99
  • 50 coins$3.99
  • ChocoFactory$3.99
Show 7 more
  • BioHazard$3.99
  • Save The Cup Ep1$3.99
  • Save The Cup Ep 2$3.99
  • Save The Cup Ep.3$3.99
  • 100 coins$6.99
  • 200 coins$9.99
  • 1350 coins$39.99

Questions

Is Castrum free?
Castrum is free to download, with no in-app purchases.
Is Klyx free?
Klyx is free to download, with in-app purchases available.
Do Castrum or Klyx have ads?
Neither Castrum nor Klyx shows ads.
Which is updated more often, Castrum or Klyx?
Castrum ships an update every 2 months, and Klyx fortnightly. Most recently, Castrum was updated on September 6, 2026 and Klyx on September 11, 2026.

Other comparisons