WALKING GAME × ROGUELITE × AUTO BATTLER
No need to open the app before you walk.
Keep your phone in your pocket and just walk. Your steps are collected later, and the game fits into a coffee-shop wait or the trip home — three to five minutes a stage. No location tracking, no background process, so your battery is safe even on a long day out.
- No app launch before walking
- No battery used while walking
- 3–5 min per stage
Free to play. No purchases that buy power directly.
* Step data is used only within the game and is never sent outside your device.
ABOUT
Walk first. Open the app only when you get back.
No launching the app before you head out, no checking the screen on the way, no wondering whether it is still running. Your phone is already counting your steps, and the game simply receives them the next time you open it. Forget to open it, and nothing is lost.
No location tracking and no background process, so the game uses no battery while you walk. Even on a long day of sightseeing, your charge stays free for maps, photos and the train home.
The game itself is a short one. A stage takes three to five minutes, and about fifteen minutes wraps up a day — a coffee-shop wait, the train ride home after a trip. It will not eat your evening.
Walk with your eyes on the scenery. That was the starting point.
HIGHLIGHTS
Six things that make this mini game what it is
No app launch before you walk
Your device (Apple Health / Health Connect) records your steps as usual, and the game reads them the next time you open it. No launching before you head out, no closing when you get back — and forgetting to open it costs you nothing.
No battery drain, even on a trip
No location tracking, no background process. The game does nothing while you walk, so on a long day of travel your charge stays free for maps and photos. Data use is minimal too.
Your walk stays yours
Nothing here calls you back to the screen mid-walk. No map to chase, no place you have to visit. For anyone tired of walking with their eyes on a map, or who never stuck with a pedometer app.
A mini game: three to five minutes a stage
Side-scrolling auto battles that finish while you wait for your coffee or ride the train home from a trip. About fifteen minutes wraps up a day, and you lose nothing by stopping partway. It will never hold you for hours.
Arrange them, then watch — an auto battler you raise
Arrange the memory fragments you gathered with Walk points and watch the battle play out. Total steps, permanent stats, fragment levels — the numbers grow quietly as you walk, without you having to watch them.
A life lasts one week — a reincarnation roguelite
Your character lives about a week. At the end comes rebirth: level back to 1, all fragments released but two. In exchange, permanent stats accrue and fragment levels carry over — each life reaches a little further than the last.
HOW TO PLAY
Walk. Then play.
Six steps — and the first one does not involve opening the app.
Walk as usual with your phone in your pocket — no need to open the app.
Open the app later, and your steps become Walk points.
Spend Walk points to call in the memory fragments of those who came before.
Arrange your fragments and purify the malice haunting the city in auto battle (3–5 minutes a stage).
Raise your character and fragments, and reach deeper stages.
Finish a one-week lifetime, pass the strength on, and begin the next life.
SCREENS
A look at the game
Swipe sideways to see more.
THE WORLD
Memory lingers in the atoms we leave behind.
22
ancestors
88
fragments (22 × 4)
In this world, a faint memory remains in the atoms a person leaves behind. After long years, when enough atoms of one particular person gather, a memory fragment is born.
Takeda Shingen's Mountain. Murasaki Shikibu's mono no aware. Newton's gravitation. And the memories of people whose names never reached us. Those who left a name and those who did not lend you their strength alike.
Memory remains, famous or not.
In this world, memory remains just the same for people who were never widely known.
The farmers who sustained daily life in the Edo period.
The foot soldiers who survived the battlefield.
The police officers who kept the town safe.
The days each of them lived held feelings and experiences of their own.
Those memories, too, are carried on with the atoms.
In Memory Of Atoms, we plan to keep adding, little by little, memory fragments not only of those who left their names in history but also of the people who sustained everyday life.
UPDATES
What's new
2026.11.09
LATESTAndroid / iOS Ver.0.5.1 released
A new feature, “Rear Support,” now unlocks when you clear Stage 5-7. Growth parameters for each fragment now also display a rank.
2026.11.06
Android / iOS Ver.0.4.9 released
Updated the app’s internal system and changed how the week is displayed. The list of bond effects is now shown in the encyclopedia, and the Around-Japan course has been divided into even finer sections.
2026.10.30
Android / iOS Ver.0.4.8 released
Updated the app’s internal system and improved the summoning screen. A tag filter has also been added when building your party.
2026.10.28
Android / iOS Ver.0.4.7 released
Additional tags have been given to Peasant and Foot Soldier, and the bond effects “Dragon and Tiger” and “Iga Clan” have been added. Peasant’s “Uprising” has also been changed.
2026.10.24
Android / iOS Ver.0.4.6 released
Each fragment now has a tag, and fielding 5 or more of the same tag increases your formation bonus. The bond effect “Oath of the Peach Garden”, triggered by fielding Liu Bei, Guan Yu and Zhang Fei together, has also been added.
2026.10.23
Android / iOS Ver.0.4.5 released
The look of dialogs has been improved, and the SNS share card for your personal records has been refined.
2026.10.21
Android / iOS Ver.0.4.4 released
Endings for Stages 5-10 have been added. Parts of the UI were also updated, the opening was fine-tuned, and the Blessing of Encounter’s “×” was corrected to “+”.
2026.10.19
Android / iOS Ver.0.4.3 released
Today’s Pickup has been expanded from 3 to 4 slots, and dedicated pickup days have been introduced on which only one specific ancestor appears. You can now also choose your walking course — the course you pick changes which ancestors you are more likely to meet.
2026.10.12
Android / iOS Ver.0.4.1 released
Added a new item, the Self-Training Crystal, which grants 300 EXP to your character. Ninja’s “Silent Steps” was also buffed, and the title screen now shows today’s steps first.
2026.10.12
Android / iOS Ver.0.4.0 released
Added a new item, the Fragment Awakening Crystal, which grants 1,000 EXP to a memory fragment. Some wording and bugs were also fixed.
2026.10.10
Android / iOS Ver.0.3.9 released
Added Secret Arts, which you can unleash by collecting all of the same ancestor’s fragments during battle. “Records of Secret Arts” was also added to the Ancient Archive, along with fixes related to ad viewing.
2026.10.04
Android / iOS Ver.0.3.8 released
Added two new memory fragments, Hattori Hanzo and Ninja. Some wording was also revised.
2026.10.01
Android / iOS Ver.0.3.7 released
Fixed a bug when summoning and a bug where the app could not launch after updating. Some wording was also revised.
2026.09.29
Android / iOS Ver.0.3.6 released
Improved the guidance after clearing a stage so it's clear which difficulty to play next. Also unified the in-game font to a sans-serif typeface and refined the overall look of the UI.
2026.09.27
Android / iOS Ver.0.3.5 released
Redesigned the SNS share card for the reincarnation records, and updated the fragment summoning visuals and some wording.
2026.09.24
Android / iOS Ver.0.3.4 released
Added a character encyclopedia, the Record of Encounters, and changed how some UI text is displayed.
2026.09.23
Android / iOS Ver.0.3.3 released
Reincarnated memory fragments now grow faster the more times they have reincarnated: the experience they earn increases with each reincarnation.
2026.09.22
Android / iOS Ver.0.3.2 released
Enhanced the effects for memory reincarnation and for encounters, and added Auto Clear for lives you can already finish in a couple of seconds. Newton's skills have been fully reworked, and several other memory fragments were adjusted as well.
2026.09.21
Android / iOS Ver.0.3.1 released
Fixed a bug where the wind sound would not stop when a fragment appeared. Your character's reincarnation bonus was also increased, and memory fragments that have already reincarnated are now easy to spot at a glance.
2026.09.20
Android / iOS Ver.0.3.0 released
Fixed a display issue on the stage select screen. LUCK, which until now only affected orb appearance rates, now has new effects in battle as well.
2026.09.20
Android / iOS Ver.0.2.9 released
Reworked the effect shown when you obtain an item and added dedicated music to the boss battles in Stages 2-4. Your total atomic weight is now displayed as well.
2026.09.19
Android / iOS Ver.0.2.8 released
Fixed an issue where memory fragments could appear cut off during battle on some devices.
2026.09.17
Android / iOS Ver.0.2.6 released
Experience items can now be used in bulk, with UI improvements to the reincarnation records and Ancient Treasury, plus bug fixes.
2026.09.16
Android / iOS Ver.0.2.5 released
Reworked the loadout screen so memory fragments are easier to choose, with slightly easier Stage 4-6 and 4-7.
2026.09.13
Android / iOS Ver.0.2.3 released
Added Atomic Weight, a new power benchmark. Prime-of-life stat multipliers were buffed, and reincarnation bonuses and SNS sharing were revised.
2026.09.10
Android Ver.0.2.1 / iOS Ver.0.2.2 released
A large buff to the constant-healing fragments, difficulty and experience tuning, and fixes to the English text.
2026.08.25
Now available on iOS and Android
Thank you for walking with us. Player feedback and play data will keep shaping this game.
Game info
- Title
- Memory Of Atoms
- Genre
- Walking game × roguelite × auto battler (step-linked, no location data)
- Developer
- Yousetsu Soft (individual developer)
- Platform
- iOS / Android
- Released
- August 25, 2026
- Version
- Ver.0.5.1
- Price
- Free to play (optional ads). No purchases that buy power directly.
- Languages
- Japanese / English / German
FAQ
Do I need to open the app before I walk?
No. Your device already records your steps, so there is nothing to start. Even if you forget to open the game for a while, the steps you walked are collected the next time you open it.
Will it drain my battery on a trip?
No. There is no location tracking and no background process, so the game uses no battery while you walk. Your charge stays free for maps and photos.
How much time does it take per day?
One stage takes three to five minutes, and about fifteen minutes wraps up a day — short enough for a coffee-shop wait or the train home.
How is my step data handled?
Only your step count is read, from Apple Health on iOS and Health Connect on Android. It is used only within the game and is never sent outside your device.
My steps have not appeared yet.
Depending on how the source app syncs, it can take a few minutes to show up.
Take a walk. The rest happens on its own.
Open the app when you get back.
Free to play. No purchases that buy power directly.
Press and review material (screenshots, video, icons): Yousetsu Soft — yousetsukurosaki@gmail.com