Shimeji: Play with Screen Pets

Shimeji: Screen Buddies takes the old desktop-mascot idea further than a phone app strictly needs to, and for the people it’s built for, that depth is the appeal. Up to ten animated characters can walk the edges of your screen, climb the borders, nap, and get flung across whatever app you have open, while Ghost Mode keeps them visible without swallowing your taps. It doubles as a small animation studio too, with a pixel editor, classic PC Shimeji pack import, and an AI character generator. The caveats: a bigger cast means noticeably more battery drain, and the AI generator and higher-tier buddy slots sit behind a Mushroom currency or a premium subscription. If you want a character keeping you company while you scroll, we think it’s an easy recommendation; if you want a clean screen and a full battery at bedtime, it’s probably not the right fit.

How the buddies behave on your screen

The core experience is simple: you pick a character, and it lives on top of your other apps. Each mascot runs its own behavior logic that reads the screen boundaries, your phone’s orientation, and where you touch, so it walks along the bottom edge, climbs up the side, sits, sleeps, and slips into contextual animations without you directing it.

The physics are what give it personality. The app models simulated mass and gravity, so tapping, dragging, or throwing a buddy sends it moving across the display before it drops and settles onto a horizontal edge. That small sense of weight is the difference between a sticker and a pet, and it’s the part desktop Shimeji fans will recognize at once.

Like any app that draws over other apps, it depends on Android’s “display over other apps” permission, so expect to grant that before anything appears. The built-in library is made up of original mascot designs rather than licensed characters, and each one comes with adjustable physics and scale settings. Characters also earn experience points the longer they spend on screen, with bonus XP when you tap and drag them. Leveling up unlocks new idle poses, rarer animations, and extra interactive behaviors and visual effects. It’s light progression, but it gives you a reason to keep a favorite around.

Ghost Mode is what makes it livable

An overlay that intercepts your touches gets in the way fast. Ghost Mode is the answer, and it’s one of the features players praise most often. Turn it on and the overlay passes every touch straight through to the app underneath, so a character can sit over your keyboard or your game’s controls without eating a single tap. Power users and mobile gamers in particular describe it as what makes the app practical to leave running every day.

The trade-off is built into how it works. A ghosted buddy ignores taps, which means you can’t pick it up, throw it, or earn interaction XP until you switch Ghost Mode back off. We’d suggest treating it as a rhythm: ghosted while you’re working, typing, or playing, interactive when you have a spare minute.

Making your own characters

This is where Screen Buddies separates itself from a basic screen-pet app, and it draws much of the app’s praise. There are three routes to a custom character.

The pixel art canvas is a frame-by-frame editor with pencils, flood fill, a color picker, and frame duplication. That’s enough to tweak an existing pose or, with patience, build a character from scratch. Reviewers who make original characters often single it out, along with pack import, as the way to bring their own designs to life.

PC Shimeji import is the feature long-time fans will care about most. Classic desktop packs, ZIP bundles of PNG frame sequences plus XML behavior files, can be copied to your phone’s storage and opened from the app’s import menu, which unpacks the frames and maps them into the mobile engine. The listing promises full backward compatibility with that classic format. If you have a folder of favorites from years of desktop use, this is the strongest reason to choose this app.

Magic AI generation rounds out the set. You describe a character in plain language, and the generator produces a design along with the core animation poses: walk, climb, fall, and sit. The result lands in the pixel canvas for touch-ups, which is the right call, since a generated sprite works best as a starting point. It’s also the feature tied most directly to the paid layer.

Where the money comes in

Magic AI creation and the higher-tier buddy slots require Mushrooms, the app’s in-app currency (a fitting name, since shimeji is a Japanese mushroom), or a premium subscription. So two of the more tempting upgrades, a steady stream of AI-made characters and a larger cast on screen at once, are the ones that cost money.

That leaves the classic routes, drawing in the canvas or importing a PC pack, as the main way to get custom characters without leaning on the currency. For a lot of users that will be plenty. If your plans center on AI generation, check current Mushroom and subscription prices in the app before you sink time into a project.

Battery and performance

Running animation on top of every app costs power, and the developer says so: the listing notes that multiple characters raise CPU usage and can affect battery life over long sessions. Player reports agree: running four to ten companions at once produces a noticeable increase in drain, and experienced users recommend a smaller cast, often one or two characters, for all-day use.

The levers are sensible. You can reduce the number of active companions, shrink their scale, slow their animation speed, and lean on Android’s own battery saver to throttle background work. What you can’t have is the full ten-character spectacle and all-day battery at once, so decide which matters more to you.

One mild tension: the XP system rewards time on screen, while the battery advice points toward fewer characters and shorter sessions, so chasing unlocks on several characters at once costs charge.

Where it frustrates

Beyond battery, two frictions come up repeatedly.

The first is in the pixel editor. Duplicating a frame can occasionally leave the copy linked to the original, so edits made to the duplicate can carry back into the base frame. For anyone building an animation pose by pose, that’s a genuine workflow snag, and creators have asked for more independent frame handling and proper layer management. Until that’s refined, it’s worth checking the original frame after you edit a copy.

The second is complexity. As the AI and creation tools have expanded, the interface has grown with them, so someone who just wants a cute character on screen has more menus to get through. Power users will see that as a fair trade; casual users are more likely to feel it.

How it compares

Against the original desktop Shimeji programs, the phone version is always with you and adds a pixel editor, AI generation, and XP progression, while pack import means you keep your old collection.

Against live wallpapers and animated widgets, the difference is where the character lives. A wallpaper or widget animates your home screen and stays there; Shimeji’s buddies follow you into your messaging app, your browser, and your games. That’s either the charm or the drawback, depending on how you feel about company on screen.

Against simpler single-pet overlay apps, Screen Buddies offers more characters, more creation tools, and more settings; if you want one pet and nothing else, a lighter app may suit you better.

Who it’s not for

It’s a poor fit if you want a distraction-free screen; even ghosted, a character strolling across your reading app is still motion in the corner of your eye. It’s a weaker choice if your phone already struggles to last the day, especially with a big cast. If you mainly want AI-generated characters without spending, the paid layer will feel limiting. And if you’re after a one-tap pet with no setup, the creation-suite menus mean more to learn than you might expect.

The verdict

Shimeji: Screen Buddies is a faithful, ambitious mobile home for the desktop-mascot idea. The physics give its characters real charm, Ghost Mode makes them practical to keep around, and PC pack import plus the pixel canvas make it a creative tool as much as a toy. Battery drain scales with your cast, the frame editor has a duplication quirk, and AI creation costs Mushrooms or a subscription. Keep one or two buddies running, switch on Ghost Mode when you’re typing or gaming, and it’s one of the more charming ways to personalize an Android phone.