Codes ยท Android, iOS
MementoMori Codes: Active and Expired (June 2026)
Last checked June 21, 2026 (UTC)
MementoMori codes show up around updates and events in this AFK gacha RPG that everyone remembers for its art and music, and most of them hand you Diamonds. I keep the working ones rounded up here so you're not hunting.
MementoMori codes are coupon codes the MementoMori team shares on their social channels and during streams and update events for free Diamonds (premium summon currency), gold, and character or rune enhancement materials. If you haven't played it, MementoMori is an idle AFK RPG where your witches fight on their own and rewards pile up while you're offline. Diamonds pay for the summons that pull new witches, you're always chasing a stronger lineup, and the haunting character songs are the real signature hook. Code Diamonds just speed up building that roster.
Quick tip. I'd put code Diamonds straight into the featured banners for a witch you'll genuinely main, not scatter them across pulls. A focused team of leveled witches clears the idle stages and arena far better than a wide bench of underleveled ones.
New codes pop up around anniversaries, collaboration events, and milestone streams. They run on a normal gacha timeline, so each one expires after a window. You redeem them in game through the coupon option in the menu, and they're case sensitive, so copy carefully.
- Redeem in game through the coupon option in the menu.
- Most MementoMori codes give Diamonds, gold, and enhancement materials.
- They expire once the event window's over, so redeem early.
- Each code is single use per account.
- Codes are case sensitive, so use the Copy button instead of typing.
Active MementoMori codes (8)
Use the Copy button next to each code. They're case sensitive, so paste rather than type, and redeem early because they expire once the event window closes.
| Code | Reward |
|---|---|
| lucky35gacha New Expires soon | Exclusive in-game rewards |
| meme35gift Expires soon | Exclusive in-game rewards |
| meme35anniv Expires soon | Exclusive in-game rewards |
| 2ndmementogift Expires soon | Exclusive in-game rewards |
| 2ndluckyanniversary Expires soon | Exclusive in-game rewards |
| memento2024mori Expires soon | Exclusive in-game rewards |
| memento777 Expires soon | Exclusive in-game rewards |
| F8WUGDAPSE Expires soon | Exclusive in-game rewards |
If a code says invalid, it's expired or you've already used it. Check the official MementoMori channels for the current set.
Expired MementoMori codes
Skip these. They were tied to old launch windows and seasonal events, so they're done.
| Code | Reward | Expired |
|---|---|---|
| MMLAUNCH | Launch Diamonds | 2025 |
| MMSUMMER25 | Summer Diamonds | September 2025 |
| MMWINTER25 | Holiday Diamonds | January 2026 |
How to redeem MementoMori codes
MementoMori keeps it simple: you redeem in game through the coupon option, and there's no separate web portal. Whatever you claim lands in your in-game mailbox.
- Open MementoMori, tap the menu, and find the coupon option.
- Enter the code exactly as shown, since it's case sensitive.
- Confirm to redeem.
- Open your mailbox to grab the Diamonds and items.
If a code gets rejected, it's usually expired or already used on this account. They're case sensitive, so paste from the Copy button to rule out a typo.
MementoMori codes FAQ
What are Diamonds used for in MementoMori?
They're the premium summon currency, so you spend them on banners to pull new witches for your lineup. Code Diamonds speed that collection up, and since this is an idle RPG, a stronger lineup clears the auto-battle stages and arena faster.
How should I spend code Diamonds?
On the featured banners for a witch you'll actually build into your main team. A focused group of leveled witches clears the idle stages and arena far better than a wide bench of underleveled ones, so concentrate your pulls instead of scattering them.
Why does my code keep failing?
Three usual suspects. It expired after its event window, you already redeemed it on this account, or you mistyped it. MementoMori codes are case sensitive, so paste from the Copy button to keep the exact form.
Where do I enter codes in MementoMori?
In game, through the coupon option in the menu. Enter the code, confirm, then open your mailbox to claim the rewards. There's no separate web portal, so everything happens inside the app.
Does idle progress keep going while I'm offline?
It does. MementoMori is an AFK RPG, so your witches keep battling and rewards keep stacking while you're away. Log back in to collect the haul, spend Diamonds on banners, and level the witches you pulled. Codes just top up the Diamond side of that loop.
Where do I find the newest MementoMori codes?
Follow the official MementoMori channels and the milestone streams. New MementoMori codes drop around anniversaries, collaborations, and special broadcasts, usually announced during or right after the stream.