Advent vs Sundy Stairway
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Advent
Experience the original text adventure game on your iPhone. Explore a vast cave system, solve puzzles, and collect treasures in this classic interactive fiction experience. Features Game Center integration for leaderboards and social play.
- Original text adventure gameplay
- Explore a vast cave system
- Solve puzzles and collect treasures
- Game Center leaderboards
- Invite friends and virtual tours
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Colossal Cave Adventure (also known as ADVENT, Colossal Cave, or Adventure) (Crowther, 1976; Crowther & Woods, 1977), an iPhone version of the first text adventure computer game. Rewrote game to implement 1000-point version by David Malmberg. Also, added Game Center support! In addition to leader boards, you can now invite other players and give them a virtual tour to help them should they get stuck.
Sundy Stairway
Embark on a mystery in Calendar Town as a 14-year-old boy investigating strange deaths and suicides. Your choices will determine the fate of others and uncover the town's secrets.
- Interactive story choices
- Mystery investigation
- Character-driven narrative
- Uncover town secrets
- Multiple endings
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Join Sunday, a 14-year-old boy who moves with his family to Calendar Town, where mysterious deaths and suicide cases seem to occur. Tragedy will come when one of his relatives is found dead in his home. Help Sunday to discover the mysteries of this town where your decisions could save the lives of others.
Screenshots
Verdict
The clearest difference is review sentiment: Sundy Stairway at 90% against Advent's 47%. Sundy Stairway also leads on rating (4.8 vs 3.6) and update cadence (every 2 weeks vs every 3 months). Advent's advantage is in-app purchases (none vs 1) and iOS requirement (9.3 vs 15.0). 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
Both are free to download. Sundy Stairway sells 1 one-off in-app purchase. Advent asks for nothing beyond the download.
Sundy Stairway holds the better App Store score, 4.8 against 3.6. That said, the two scores are not equally well evidenced: Sundy Stairway has 379 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 47% of Advent's written reviews are positive against 90% of Sundy Stairway's.
Advent ships an update every 3 months, Sundy Stairway every 2 weeks. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.
| Parameter | Advent | Sundy Stairway |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (14 ratings) | 4.8 (379 ratings) — better |
| Positive reviews | 47.1% of reviews | 89.9% of reviews — better |
| Number of ratings | 14 | 379 — better |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 14 MB | 281 MB |
| Age rating | 9+ | +12 |
| Developer | Pi-Soft Consulting, LLC | Juan Amaro |
Customer experience
Advent
Sundy Stairway
User reviews
Advent
From 14 App Store ratingsWhat we love
- 🎮 Classic text adventure game
- 👍 Nostalgic for long-time fans
- 💡 Brings back an old-school gaming experience
Room to improve
- 🐛 Crashes and freezes at certain points
- 🤔 Confusing and difficult for new players
- 🖥️ Clunky interface without keyboard support
Sundy Stairway
From 379 App Store ratingsWhat we love
- 🎨 Beautiful art style
- 🤩 Engaging storyline
- 👍 Unique gameplay mechanics
- 🌟 Memorable characters
- 💯 High-quality production
Room to improve
- 🐛 Occasional crashes and bugs
- ⏱️ Lengthy playthroughs
- 🔍 Confusing navigation at times
- 💰 Concerns about potential paywall
Bugs and requests
Advent
Reported bugs
3 issues- Unable to water the plant
- Combination for safe doesn't work as expected
- Candles in the crypt cause the game to crash
Requested features
3 requests- Add scrollback feature to view previous commands and responses
- Implement directional buttons or compass for navigation
- Integrate auto-correct and predictive text for easier typing
Sundy Stairway
Reported bugs
3 issues- Inability to save progress past certain chapters
- Trouble with mini-game controls and mechanics
- Inconsistent performance on older devices
Requested features
4 requests- More language options
- Ability to adjust difficulty settings
- Inclusion of a fan art gallery
- Option to disable certain visual effects
In-app purchases
Advent
No in-app purchases
Sundy Stairway
- Sundy Stairway Premium$8.99
