DepthDrift vs Sunken Vault
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
DepthDrift
Explore mysterious caves and build a team of unique characters in this idle RPG. Your team battles and collects treasure even while you're offline. Craft gear, research technology, and upgrade your base for permanent progression.
- Idle exploration and combat
- Six unique character classes
- Base building and facility upgrades
- Equipment crafting and enhancement
- Research for permanent bonuses
- No ads or pay-to-win mechanics
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Dive deep into mysterious underground caves in DepthDrift — the idle RPG where your team explores, battles, and collects treasure even while you sleep. Recruit 6 unique character classes. Craft powerful gear. Research ancient technology. How deep can you go? EXPLORE THE DEPTHS Send your team of explorers on expeditions into forgotten caverns. They'll fight monsters, find rare loot, and push deeper — all on their own. Come back to discover what they've uncovered. 6 CHARACTER CLASSES Build the perfect team from six distinct classes: - Warrior: Tanky front-line defender - Mage: Elemental magic damage dealer - Scout: Fast explorer with treasure-finding bonuses - Healer: Keep your team alive in the deep - Engineer: Crafting specialist with equipment bonuses - Summoner: Command mystical creatures IDLE PROGRESSION THAT NEVER STOPS Your expedition continues while you're away. Close the app, go to sleep, live your life — and return to find treasure, experience, and surprises waiting for you. Real progress with zero pressure. BUILD & UPGRADE YOUR BASE Invest resources into 6 upgradeable facilities: - Laboratory for permanent research bonuses - Forge for crafting and enhancing equipment - Warehouse for expanded storage - Trading Post to buy, sell, and exchange - And more to discover as you go deeper CRAFT POWERFUL EQUIPMENT Gather rare ores and materials from cave expeditions. Forge weapons, armor, and accessories. Enhance your gear to push past previously impossible depths. RESEARCH & PERMANENT UPGRADES Unlock permanent bonuses through the research system. Every discovery makes your team stronger — not just for one run, but forever. NO ADS. NO PRESSURE. DepthDrift is designed to respect your time. No forced ads, no energy timers, no pay-to-win walls. Just a calm, rewarding idle RPG that fits into your life. Start your expedition today. The caves are waiting.
Sunken Vault
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The waters have receded from an ancient vault, revealing forgotten treasures, sealed chambers, and guardians that never abandoned their posts. Build your expedition and descend into a dark fantasy dungeon crawler where formation, equipment, and every turn matter. Choose four heroes from ten distinct classes. Develop their skills, discover powerful equipment, and build a party whose abilities work together. Explore winding passages, uncover hidden rooms, and face the dangers waiting beyond the reach of daylight. • TACTICAL TURN-BASED COMBAT Position your heroes across two ranks. Protect vulnerable allies, exploit enemy weaknesses, and combine abilities to overcome dangerous encounters. • BUILD YOUR PARTY Choose from ten classes with distinct skills and playstyles. Customize each hero’s abilities and equipment as your expedition grows stronger. • EXPLORE THE DEPTHS Navigate generated dungeon floors filled with branching paths, concealed chambers, shrines, merchants, and strange discoveries. • DISCOVER POWERFUL LOOT Find weapons, armor, and unique treasures with special effects. Compare equipment, trade with merchants, and shape your party around what you uncover. • CHALLENGE THE GUARDIANS Defeat the forces guarding each descent and piece together the history of the vault through atmospheric story passages. • CONTINUE YOUR EXPEDITION Automatic saving preserves your progress between sessions. Review completed expeditions in your run history, then return with a new party and a different strategy. Play the first two floors free. Unlock floor 3 and beyond for every expedition with one purchase. No subscription. There are fortunes below. How far will you descend?
Screenshots
Verdict
The clearest difference is price: Sunken Vault at Free against DepthDrift's $3.99. DepthDrift's advantage is in-app purchases (none vs 1) and update cadence (every 6 days vs every 3 weeks). On ads, device support and iOS requirement 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
Sunken Vault is free to download; DepthDrift costs $3.99 up front. Sunken Vault sells 1 one-off in-app purchase. DepthDrift asks for nothing beyond the download.
DepthDrift ships an update every 6 days, Sunken Vault every 3 weeks. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.
| Parameter | DepthDrift | Sunken Vault |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.5 | 17.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 115 MB |
| Age rating | 9+ | 12+ |
| Developer | Takumi Kanzaki | Overtime Innovations LLC |
In-app purchases
DepthDrift
No in-app purchases
Sunken Vault
- Full Game$4.99









