Comparison

Celtreos vs OpenTyrian 2000

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

Head to head
About

Celtreos

Experience a classic space shooter with modern features. Engage in challenging levels with randomized elements, a vast arsenal of weapons, and customizable ships. Enjoy a rich soundtrack or play your own music.

Highlights
  • One or two-player modes
  • 30 unique songs with custom music support
  • Over 12 randomized stages
  • Extensive weapon and ship customization
  • In-game power-ups and power-downs
  • Adjustable game settings (lives, graphics, speed)
Features
Read full description

One-player game, OR two players if you have a game controller. “Celtreos” is like the space shooters of decades past: tiny ship, big weapons, waves of foes, power-ups and obstacles. Music, Sound and Voice • 30 different songs (45 minutes of music!) • You can even play your own music and auto-next-song for key game events Stages • Over 12 stages: a city, space station, ocean and more • Horizontal scrolling but more than one “screen” of vertical space • Start from any stage you want! • Each stage ends with a challenging boss • Wall layouts and spawn patterns are partially randomized Weapon Arrays, Special Moves, Power-Ups and More • Choose from a huge arsenal of weapons and special abilities • 10 different ships to choose from • Customize ship properties, such as gun mount locations • In-game power-ups with weapons, defenses and temporary powers (like Rapid Fire) • Power-down orbs with temporary inconveniences (like Weapon Freeze) Additional Configuration Options • Set number of lives, and number of times that special abilities can be used • Set graphics quality to one of three levels, and default ship speed

About

OpenTyrian 2000

Experience a classic vertical scrolling space shooter with five full episodes, hundreds of weapons, and ship upgrades. Navigate asteroid fields, battle bosses, and uncover a rich storyline. Optimized for mobile with touch controls and controller support.

Highlights
  • Five full episodes
  • Hundreds of weapons and upgrades
  • Multiple game modes
  • Rich storyline
  • FM synth soundtrack
  • Controller support
  • iCloud save sync
Features
Read full description

OpenTyrian 2000 is a faithful port of the classic DOS game Tyrian 2000, widely regarded as one of the greatest vertical scrolling shooters ever made. FEATURES: - Five full episodes of intense arcade action - Hundreds of weapons, shields, and ship upgrades - Multiple game modes: Full Game, Arcade, and Timed Battle - Rich storyline told through collectible data cubes - Iconic FM synth soundtrack - Apple TV with game controller support - iCloud save sync across iPhone, iPad, and Apple TV - Touch controls optimized for mobile with virtual joystick and direct touch modes, plus game controller support - Configurable action buttons and sensitivity - 11 languages: English, Spanish, French, German, Portuguese, Italian, Chinese, Arabic, Hindi, Japanese, Korean Originally created by Jason Emery and published by Epic MegaGames in 1999, Tyrian 2000 was later released as freeware. OpenTyrian is an open-source port that preserves the original gameplay while adding modern platform support. Navigate through asteroid fields, battle massive bosses, and uncover the conspiracy behind the mineral-rich planet Tyrian. Collect data cubes for lore, upgrade your ship at shops between levels, and discover secret levels and bonus games. Whether you played the original or are discovering it for the first time, OpenTyrian 2000 delivers the definitive classic arcade shooter experience. Privacy URL: https://playtyrian.com/privacy.html Support URL: https://tablefy.eu/feedback/8ee344ef/frostdev/6 Marketing URL: https://playtyrian.com/index.html

Screenshots

Celtreos4 screens
OpenTyrian 20004 screens

Verdict

The call

The clearest difference is rating: Celtreos at 5.0 against OpenTyrian 2000's 4.2. Celtreos also leads on review sentiment (100% vs 80%). OpenTyrian 2000's advantage is price ($0.99 vs $4.99) and ratings volume (6 vs 1). On update cadence, ads, in-app purchases and monetization model 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

Celtreos costs $4.99 and OpenTyrian 2000 $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Celtreos holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: OpenTyrian 2000 has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Celtreos's written reviews are positive against 80% of OpenTyrian 2000's.

UpkeepUpdate frequency

Celtreos ships an update monthly, OpenTyrian 2000 every 3 weeks. The most recent releases landed on September 15, 2026 and September 10, 2026 respectively.

Scorecard4 real differences · 6 level
Celtreos versus OpenTyrian 2000: the parameters behind the verdict, then further details
ParameterCeltreosOpenTyrian 2000
Price$4.99$0.99 — better
Rating5.0 (1 ratings) — better4.2 (6 ratings)
Positive reviews100.0% of reviews — better80.0% of reviews
Number of ratings16 — better
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod, Apple TViPhone, iPad, iPod, Apple TV
Requires iOS13.0 — better14.0
Further details — not scored
Size132 MB29 MB
Age rating9+4+
DeveloperKevin GrantAlvaro Escarcha Esteban

Customer experience

Celtreos

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

OpenTyrian 2000

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews10 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

None

Celtreos

No in-app purchases

None

OpenTyrian 2000

No in-app purchases

Questions

Is Celtreos free?
Celtreos costs $4.99, with no in-app purchases.
Is OpenTyrian 2000 free?
OpenTyrian 2000 costs $0.99, with no in-app purchases.
Which has better reviews, Celtreos or OpenTyrian 2000?
Celtreos is rated higher. Celtreos averages 5.0 out of 5 from 1 ratings, while OpenTyrian 2000 averages 4.2 from 6 ratings.
Do Celtreos or OpenTyrian 2000 have ads?
Neither Celtreos nor OpenTyrian 2000 shows ads.
Which is updated more often, Celtreos or OpenTyrian 2000?
Celtreos ships an update monthly, and OpenTyrian 2000 every 3 weeks. Most recently, Celtreos was updated on September 15, 2026 and OpenTyrian 2000 on September 10, 2026.

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