Buy Diamonds in MementoMori: AFKRPG by Player ID

MementoMori: AFKRPG is a Japanese mobile idle-RPG with gacha mechanics, developed by Bank of Innovation. The global mobile release occurred in October 2022, and the PC version launched on Steam in 2023 under DMM Games publishing. The game is available on iOS, Android, and Steam with unified account progress. According to official sources, MementoMori has been downloaded over 5 million times. The game revolves around collecting over 100 witches from six factions — Azure, Crimson, Emerald, Chaos, Amber, Radiance — each with unique visual designs, voices, and musical themes performed by guest singers.

The key visual and audio features of MementoMori are Live2D animations and an orchestral soundtrack. The combat system is automatic: players assemble a team of five witches, customize positioning, equipment, and runes, and battles proceed in auto-fight mode. Progress continues offline through idle mechanics — your witches accumulate resources, EXP orbs, and materials even when you're not playing. As of April 2026, the game features seasonal events, themed Prayer banners, and content updates — Bank of Innovation has supported MementoMori with regular updates since 2022.

What Are Diamonds in MementoMori

Diamonds are the premium currency of MementoMori: AFKRPG. On the free path, Diamonds are earned through achievements, daily quests, story progression, Battle League (PvP ranking), and seasonal events. However, the amount of free Diamonds is limited, and players purchase Diamond packs to target-summon specific SR witches or accelerate progress.

Diamonds are spent in-game on the following tasks:

• Prayer — the main gacha system. Diamonds unlock banners for summoning SR witches. The more Diamonds invested in a single banner, the higher the chance to summon a target heroine like Florence, Cordie, Merlyn, Primavera, Mimi, or seasonal limited witches.
• Cave of Space-Time — a separate shop offering copies of key heroes (Cordie, Merlyn) and rare runes. Some items are purchased with Cave Coins, while others require Diamonds.
• Equipment and Runes — Diamonds unlock resources for upgrading gear. DEF Break and Speed runes are the most valuable for DPS carries; they can be enhanced to top-tier levels through Diamond packs.
• Inventory Expansion — Diamonds increase slots for items, witch shards, and equipment. This becomes critical in the late game.
• Idle Progress Acceleration — Diamonds allow you to instantly collect offline resources and skip waiting. Useful during active grinding of chapters and towers.
• Seasonal Packs and Events — During anniversaries, thematic events, or new witch releases, limited offers become available exclusively for Diamonds.

Diamonds are the only way to accelerate witch collection and access limited heroines from seasonal banners. For players aiming to optimize their gameplay and avoid missing time-limited characters, top-ups provide a direct advantage.

How to Buy Diamonds in MementoMori at the Best Price

Topping up MementoMori through Ashop follows the UID-flow principle: the operator credits Diamonds through Bank of Innovation channels using only your public Player ID. Your Google, Apple, or Steam account password is neither needed nor requested. Below is a step-by-step guide.

Step 1 — Find Your Player ID

Launch MementoMori: AFKRPG on your phone or Steam. On the main screen, tap the profile icon in the top-left corner. Your Player ID — a numerical account identifier — is displayed in the Account section. Copy or note it down, as it will be required when placing your order. The Player ID is a public identifier and is safe to share with the operator. Your Google login or game password is not required.

Step 2 — Choose a Diamond Pack

On the MementoMori: AFKRPG page in the Ashop catalog, Diamond packs of various denominations are available — from starter packs for initial Prayer summons to larger packs for targeted SR witch collection or seasonal banner preparation. Witch's Shard Packs, which accelerate the activation of specific SR witches without requiring duplicates through Prayer, also periodically appear.

Step 3 — Place Your Order

Add the pack to your cart, enter your Player ID in the order field, and provide an email for confirmation. Double-check your Player ID before payment — Diamonds will be credited to the account matching the ID provided, and once confirmed, the transaction cannot be canceled or transferred.

Step 4 — Payment Methods

Available payment methods:

• MIR bank card from Russian banks
• SBP (Fast Payment System) through any banking app (Sberbank, Tinkoff, Alfa-Bank, VTB, etc.)

The specific payment methods available are displayed on the payment page after selecting a pack.

Step 5 — Receive Diamonds

After payment confirmation, your order enters the operator's queue. The operator credits Diamonds through Bank of Innovation channels to the specified Player ID. Once credited, launch MementoMori, refresh the main screen, and check your Diamond balance in the top-right corner. If the pack included a bonus or Witch's Shards, rewards will also appear in your inventory or in-game mail.

Payment Methods in Ashop

Ashop only accepts payment methods available to Russian players in 2026. Foreign cards, accounts in overseas payment services, or VPNs are not required.

Bank Card (MIR, Visa, Mastercard)

Cards from Russian banks under the MIR payment system are accepted as standard. Visa and Mastercard issued by Russian banks are processed through the same channels. This is the most common payment method for Russian buyers — entering card details on the payment page takes a minute, and confirmation via 3-D Secure arrives via SMS or push notification from your bank app.

SBP (Fast Payment System)

Pay via QR code or payment link through any banking app connected to SBP. This includes nearly all Russian banks: Sberbank, Tinkoff, Alfa-Bank, VTB, Raiffeisen, Gazprombank, and more. No separate card is needed — just an installed banking app with biometric or PIN authentication. SBP transactions are usually confirmed instantly, making it convenient for mobile orders.

Top-Up Security

MementoMori: AFKRPG falls under the UID-flow top-up category. This means the operator credits Diamonds through Bank of Innovation channels using your public Player ID and does not require your Google or Apple account password, Steam login, or access to the email linked to your gaming account. This is a fundamental difference from login-flow games (CoD Mobile, Roblox, Brawl Stars), where such data is indeed necessary.

What Is Not Required for MementoMori Top-Up Through Ashop:

• Google account or Apple ID password
• Steam password or two-factor authentication codes
• Access to the email linked to your game account
• Any confirmation codes from SMS or authenticator apps

What Is Required:

• Player ID — your public MementoMori account identifier (found in the Account section)
• Email for order confirmation and support

If any MementoMori top-up service requests your game account password or confirmation codes — this is atypical. Such data is not technically required for Diamond credits, and requesting it is a red flag to cease communication. Your Player ID can be found in-game in seconds and shared safely — it does not provide access to your account, email changes, or login details.

What to Spend Diamonds On in MementoMori

Strategic Diamond allocation is crucial for progressing in MementoMori. While the game appears casual due to idle mechanics, its witch collection and seasonal events reveal a deep priority system.

For Beginners (First Two Weeks)

• Prayer Banner for a Strong DPS — the top priority: summon Cordie or Florence as your primary DPS. These are the most versatile carries for PvE content and Battle League in the early-to-mid game.

• Witch's Shard Pack (if available) — accelerates SR witch activation and awakening without requiring duplicates through Prayer.

• Inventory Expansion — expanding slots by 1-2 levels eliminates the need to constantly sort materials and items.

For Active Players

• Serial Summons (Multi-Roll) on Event Banner — saving packs for seasonal limited witches is more efficient than spending Diamonds on permanent banners. Seasonal banners occur every 2-3 weeks.

• Main DPS Equipment and Rune Upgrades — DEF Break and Speed runes at level 9/9/9 provide more damage output than an additional SR hero.

• Idle Progress Acceleration Before a Season — collecting offline resources in bulk helps prepare your team for new seasonal content without a two-week pause.

For Advanced Players

• Targeted Collection of Limited Witches — large Diamond packs for pity closure on 2-3 seasonal banners annually.

• High-Level Equipment and Augmentation — a combination of Holy and Dark augmentations on weapons, gloves, and chest armor for your primary team.

• Battle League Support — regular team upgrades through Diamonds maintain competitive rankings for top-tier PvP players.

Pack offerings and Ashop's MementoMori catalog are subject to change — check the game page for current items.

Why Top Up Through Ashop

Ashop operates as an independent top-up service for audiences without working channels through Google Play, App Store, and Steam since 2022.

• Payment Methods — MIR card and SBP. Foreign cards, overseas accounts, and VPNs are not required.

• Player ID Only — only your public Player ID is needed for top-ups. Google, Apple, or Steam passwords are not technically required.

• 24/7 Telegram Support — operators help select suitable packs, clarify order status, and resolve delays. Support is available around the clock.

• Transparent Process — each step is logged in your account: order status, payment method, recipient Player ID, transaction date, and amount.

• Independent Channel — Ashop is not affiliated with Bank of Innovation, DMM Games, Google, or Apple. It is a top-up service for those without direct access to mobile stores or Steam Wallet with Russian cards.

Frequently Asked Questions (FAQ)

Answers to common questions about topping up MementoMori: AFKRPG through Ashop. If your query isn’t listed — contact Telegram support for assistance.