Duet Night Abyss top‑up guide — what you can buy and how it works
Duet Night AbyssAll characters and weapons are free to unlock; here’s when a top‑up makes sense and what details you’ll need.
Duet Night Abyss lets you earn every character and weapon through play, so a “top‑up” is primarily about cosmetics, time‑savers, and starter bundles rather than power. If you’re eyeing early access to outfits, a monthly pack, or a large currency bundle, here’s how the game’s progression works, what paid items actually do for you, and the information third‑party sellers commonly request to deliver your order.
What a top‑up buys in Duet Night Abyss
The roster and weapon pool are free to unlock over time. Cosmetic outfits and visual effects are the main spend targets, alongside limited starter bundles and currency packs. Outfit pulls live in the Myriad section with a familiar banner system: there are limited and standard pools, each using its own Hourglass currency. You can earn Hourglasses through events and logins, or purchase them with the game’s paid currency.
The cosmetic banner has clear guarantees and odds:
- A purple‑rarity item is guaranteed every 10 pulls.
- Hard pity grants 25 Iridescent Prisms at 90 pulls, which you can exchange for the featured skin or other items in the Prism Exchange.
- Gold‑rarity items have a 0.3% drop rate; pity is banner‑specific and does not carry over. There’s no soft pity.
Seasonal skins may also be sold directly for a set price during launch windows or events, separate from the gacha.

Progression is free: how characters and weapons unlock
Characters, weapons, and Demon Wedges come from Secret Letters earned in gameplay. You spend a Secret Letter after completing a Covert Commission, which then offers a choice of three rewards from that Letter’s pool.
- Covert Commissions are fixed at level 40, so you’ll need to progress the story and gear your starter before farming them comfortably.
- Characters require Thoughts; you’ll need 30 Thoughts to unlock one character. Ten‑Thought drops are rare (roughly 10%).
- Weapon and Demon Wedge blueprints only need to drop once; crafting materials come from the same Secret Letter source.

Secret Letters themselves are formed by exchanging 10 Secret Letter Clues. You’ll pick up Clues from the main story, side quests, daily and weekly objectives, and endgame modes. Weekly Nocturnal Echoes bosses and rotating activities like Mystic Maze and Immersive Theater supply reliable batches of Clues or featured Letters.
Newly released characters follow a cadence: featured for 28 days in Immersive Theater, then moved into the Nocturnal Echoes boss rewards, and finally into the shop’s Letter exchange. At launch, Psyche is featured in Immersive Theater, while Nocturnal Echoes bosses reward Secret Letters for Tabethe, Truffle and Filbert, Yale, and Rhythm.

Where to buy: in‑game shop vs. third‑party storefronts
You can obtain paid currency and bundles through the in‑game shop, or via external storefronts that deliver items directly to your account. Third‑party stores typically advertise lower prices, instant delivery, and a range of packs sized from small trial bundles to large all‑in options.
Commonly offered items include “Monthly Order,” “Collection of Poems,” “Hardcover Poetry Collection,” starter chests, Myriad (cosmetic) chests, and several currency pack sizes. Prices fluctuate with promos; here’s a snapshot of typical listings and current/strikethrough (original) pricing where shown:
| Item | Current price | Original price |
|---|---|---|
| Monthly Order | $3.91 | $4.99 |
| Collection of Poems | $15.66 | $19.99 |
| Hardcover Poetry Collection | $7.82 | $9.99 |
| Starter Gift Chest I | $0.77 | $0.99 |
| Starter Gift Chest II | $3.91 | $4.99 |
| Starter Gift Chest III | $7.82 | $9.99 |
| Starter Gift Chest IV | $15.02 | $19.99 |
| Myriad Mirage Chest I | $15.66 | $19.99 |
| Myriad Mirage Chest II | $18.78 | $24.99 |
| Phoxhunter Skin Chest — Starlit | $0.77 | $0.99 |
| Summer Night Wanhua Gift Box 1 | $0.39 | $0.49 |
| 60 Lunar Crystal | $0.77 | $0.99 |
| 300 Lunar Crystal | $3.91 | $4.99 |
| 980 Lunar Crystal | $11.74 | $14.99 |
| 1980 Lunar Crystal | $23.49 | $29.99 |
| 3280 Lunar Crystal | $39.15 | $49.99 |
| 6480 Lunar Crystal | $76.73 | $99.99 |
| Lunar Crystal All‑in‑One Pack | $159.23 | $200.94 |
Information third‑party stores may require
External storefronts that deliver items to your Duet Night Abyss account typically ask for:
- Login method: E‑mail account login is recommended for fulfillment.
- Game UID: the account identifier (your email address if using E‑mail login).
- User ID: your in‑game player ID.
- Game password: the password used to log in.

How to find your Player ID (User ID)
- Open the game and tap the menu icon in the top‑left of the home screen.
- Copy the Player ID shown in the profile pane.
Delivery time, payment methods, and stated safeguards
Third‑party stores commonly support card payments (Visa, Mastercard) and PayPal, and quote processing times of about 30 minutes for most orders. Some storefronts also advertise a money‑back guarantee and claim to use authorized partners for fulfillment. If timing matters, place orders when you can remain online to verify delivery promptly.
When a top‑up makes sense
Because characters and weapons are earnable, spending tends to fall into three clear buckets:
- Cosmetics now: target a featured outfit via Myriad or pick up a seasonal skin directly if it’s available at a fixed price.
- Starter value: small “Gift Chest” bundles and a “Monthly Order”‑style pack are low‑commitment ways to pad resources early.
- Big currency: large Crystal packs or “All‑in‑One” bundles if you plan to participate in multiple cosmetics banners and want the pity safety net of Iridescent Prisms.
If you’d rather not spend, focus on the main story, Covert Commissions at level 40, and weekly endgame activities. Exchange 10 Secret Letter Clues for a Secret Letter, farm Thoughts to unlock characters, and use blueprint drops plus materials to build out weapons and Demon Wedges over time.

Install the game
If you need a clean install path on PC, grab Duet Night Abyss from its Epic Games Store listing to get started: Duet Night Abyss on Epic Games Store.
Top‑ups are optional here. Treat them as shortcuts to cosmetic goals and early resource bumps, while the core progression—characters, weapons, and key upgrades—remains fully accessible through play.
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