Idle Run Aya is a free 2D animated side-scroller from Jitsu koan, made in RPG Maker. You play as Aya, who runs automatically in a simple idle game that needs little input. Press the button to start her run, then listen to the music or do something else while she moves. She can tire and stop, so you help her improve so she can run for longer periods. The game presents adult content without censorship.
The ongoing free build is v1.1, released June 26, 2025, for Windows, Linux, and Android in English. This update improves performance by making the pedometer update at intervals instead of constantly, adds smoother optimizations, fixes scrolling behavior, reduces out-of-bounds issues, and includes minor sound fixes. It also adds more than six pets, an optional butterfly click mechanic, a secret bonus level, a hidden easter egg, an occasional stretch animation while Aya is idle, a Hide Front Layer button, and a reworked random zone generator with more natural layers and new exclusive layers.
Developer's description
Run, Run, Run!
This is an idle game and doesn't require much input. Push the button and let Aya run! Enjoy the music or just do something else in the meantime! Sometimes she gets tired and stops. Help her get better to run longer!
v1.1
Performance & Technical Improvements
The
pedometer
no longer updates in real time, but at intervals – this significantly improves performance.
Additional optimizations for even smoother gameplay.
Scrolling behavior fixed
.
More measures added to prevent
"out of bounds"
bugs.
Minor
sound fixes
included.
New Content & Features
New pets added
– more than 6 cute companions await!
Butterfly click mechanic
introduced for extra interaction (optional).
Secret bonus level
added – can you find it?
A
hidden easter egg
has been added.
Idle animation
added – Aya now stretches occasionally when standing still.
New
"Hide Front Layer"
button for a cleaner view.
Random zone generator
completely reworked:
Layers now match more naturally.
Includes several new layers exclusive to the generator.
Now also works at
night
and during
rain
.
Visual & UI Enhancements
Font has been changed for improved readability.
Textbox design updated.
Visual feedback for interactables:
Clickable objects now
glow green
.
Non-clickable objects no longer light up.
Bonus step objects now
visibly marked
.
End sequence
now correctly displays
all unlocked hair colors
.
Gameplay & Balance Adjustments
Level-ups
now grant a reward every time.
Buff system reworked:
Eating is now only possible at
full speed
.
Unusable buffs are now
grayed out
for better clarity.
Buffs can now be toggled individually.
Base stamina
increased: from
30 to 50
– longer running without resting.
Interactions & Dialogue Updates
Photographer interaction:
Clicking him now
destroys his camera
.
If he manages to take a photo, he will
proudly hang it up
.
Mood bar
added:
Tracks Aya’s current state of mind.
Affects her
bust-click dialogues
.
Staying uncovered drains the bar – she starts confident but grows snappier over time.
Wearing clothes again
refills the bar quickly
.
Bust-click dialogue
added to the main menu.
Miscellaneous Fixes
Various
minor bug fixes
and polish applied.
v1.0
Full Release
Player reviews
Player rating4.0 / 5 · 6 ratings
Written reviews6 · avg 3.2★
Positive (4–5★)67%
Latest review2025-06-17
What players say
Mixed reviews: players praise its simple idle loop and visuals, but critics find it boring and lacking adult content.
5★1
4★3
3★0
2★0
1★2
Players like
Simple idle loop works well in background
Relaxing music and pleasant pixel visuals
Cheap price supports developer
Unlocking NSFW outfits, sprites, and gallery images
Common complaints
Very little adult content for an H game
Gameplay can feel repetitive and boring
Early runs need frequent attention and restarts
Best for players who want a simple idle game with occasional adult unlocks.
Summarised from 6 written player reviews.
burz_ex2025-06-17★★★★★
Simple. Enjoying. This game is not about beat-your-meat. It doesn't have much H content. Your just turn it on in the background and enjoy the music. Check it occasionally to restart the run and see new content. I like it…
reilynn2025-01-25★★★★★
I actually really like this. It's an idle game of course. Youdo have to interact with her to restart her. But that's the bare minimum. she'll pick things up you can use as boosts as you go. I have it…
Detective Cancer2025-01-12★★★★★
Hmm... I'm torn on this game but I think it's good for what it is. It could definitely do with lowering the values you need to level up and condensing the rewards but otherwise it's a solid little thing. I…
★★★★★(6)
