- Why the app store "offline" filter is basically decoration
- The story that taught me this (a delayed flight, not a tutorial)
- My actual step-by-step test, done in under two minutes
- The categories that tend to pass this test
- Where to search, instead of the app store search bar
- The bit nobody wants to say out loud
- If you're evaluating games for a business or brand reason
- What I do now before every trip
- Frequently asked questions
The short version: most apps labelled "offline" in the app store still quietly need a connection for ads, saves, or unlocking levels, so the only way to know for sure is to test them in airplane mode before you need them, not after. I do this now with every game I install for travel, and it's saved me from more than one boring, screen-dead flight.
Why the app store "offline" filter is basically decoration
Google Play and the App Store both let you filter or search for offline games, but that label is written by the developer, not checked by anyone. It's a self-declared tag, like putting "artisan" on a bag of crisps. I've downloaded games tagged offline that opened fine without a signal and then froze solid the second they tried to load an ad to let me keep playing after a game over screen. Ninety percent of "free" mobile games make their money from ads, and ads need a live connection to fetch. So the game itself might run offline, but the bit that keeps it fun, the extra life, the bonus round, the unlock, often won't.
That's the part most guides skip. They give you a list of app names and call it done. The list goes out of date within months anyway, because developers push updates that quietly add always-on features. What doesn't go out of date is a method for checking it yourself, in about ninety seconds, every single time.
The story that taught me this (a delayed flight, not a tutorial)
Two summers ago I was flying Tel Aviv to London on a flight that sat on the tarmac for two hours before takeoff because of a ground stop. My youngest had downloaded what the app store called an "offline puzzle game" the night before, specifically for the flight. It opened fine at the gate on airport wifi. The second the cabin door shut and the wifi dropped, the app locked up on a black loading screen and never recovered. It wasn't broken. It was waiting for an ad network that no longer existed for it, mid air, with no signal. That's a two hour flight delay turned into two hours of a bored ten year old and a mum trying to fix an app she had no control over at 30,000 feet.
Since then I test every single offline game the night before travel, not the morning of, and definitely not in the departure lounge on airport wifi, because airport wifi will lie to you the same way the app store description does.
My actual step-by-step test, done in under two minutes
This is the exact sequence I use now, every time, on both iOS and Android:
- Download the game while connected, as normal, and let it fully finish updating, not just installing.
- Close every other app and turn your phone to airplane mode entirely, not just wifi off, because some games sneak in a mobile data check too.
- Open the game cold, from a fully closed state, not from your recent apps tray where it might still be holding a cached connection.
- Play through at least one full level or round, including hitting a game over or a level complete screen, since that's usually where the ad call sits.
- Force close the app completely and reopen it a second time in airplane mode, because some games save progress to a server and simply refuse to reload without checking in first.
If it survives all five steps, it's offline. If it stalls, freezes, or shows a grey "no connection" box at any point, it's not, no matter what the store listing promised.
The categories that tend to pass this test
Some genres are built offline first because their whole design predates always-connected phones. Solitaire, mahjong, sudoku, and most classic puzzle games fall into this group, and I've had far better luck there than with anything built around live leaderboards or daily events. If you want a proper starting list rather than trial and error, this roundup of freeware puzzle games worth downloading is a good place to begin, because puzzle games as a category almost never depend on a live server to function, they just occasionally beg for one to show you an ad.
Horror games are a more mixed bag than people expect. I went through a stretch of testing free horror game apps for a completely different reason, working out what made them addictive enough to hold attention for a client project, and wrote up what that taught me about building hooks that keep people playing. What I noticed along the way is relevant here too: the scarier, more story driven horror games tend to be built as single downloads with no live component, which by accident makes many of them solid offline choices, while lighter jump-scare style games lean much harder on rewarded ads to stay free.
Where to search, instead of the app store search bar
The app store search bar is the worst place to look, because it ranks by popularity and ad spend, not by whether a game will still work at 30,000 feet. Better places to start:
- Curated roundups from real testers rather than store algorithms, such as this list of no internet games for Android and PC that work with zero data, which was built by testing games the same airplane mode way, not just reading store descriptions.
- Developer websites, not just store pages. A studio that's built an offline game will usually say so plainly on its own site, often with a line like "no internet connection required, ever," because it's a feature they're proud of, not an afterthought.
- Reviews sorted by "most recent" rather than "most helpful," since the most helpful reviews are often old and describe a version of the app before an update quietly bolted on live ads.
- Storage size as a rough signal. Games under about 100MB are far more likely to be fully self-contained, while anything creeping past 500MB is usually pulling in extra content, live events, or cloud saves that need a connection to sync.
The bit nobody wants to say out loud
Here's the uncomfortable part: a free game with zero ads and zero connection requirement is, in commercial terms, a game that makes its developer no money at all after the download. So the games that are truly, fully offline, no ads, no pings, no unlocks, are almost always either paid upfront (often just £1 to £3), or old, or made by a hobbyist who isn't trying to earn from it. The moment a game is free and updated regularly, someone somewhere needs it to talk to a server eventually, even if it's just to serve you one banner ad a day. If a "free forever, fully offline" game looks too good, check who made it and how recently it was updated, because that tells you more than the store description ever will.
This isn't a reason to avoid free games. It's a reason to stop being surprised when a free one that promised offline play stalls out on you. Paying £1.99 for a puzzle game you've tested and know works offline is often the cheaper option once you count the time lost to a frozen app on a train with no signal.
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If you're evaluating games for a business or brand reason
I get asked about this from a marketing angle a fair amount too, since offline mini games have quietly become a real brand tool, handed out at events, embedded in apps, used as lead magnets at conferences with dodgy venue wifi. If that's your actual reason for reading this, the airplane mode test above still applies before you put your logo anywhere near a game, and I've written more on how offline games apps can work as genuine brand promotion tools, including what to check before you commission or license one. It's the same five steps, just with a company name attached to the risk of it freezing in front of a client.
What I do now before every trip
I keep three tested, confirmed offline games permanently installed and never delete them, precisely because retesting after every phone update is annoying but skipping it once is how you end up frozen on a runway again. If gaming apps aren't your main interest and you're more curious about turning spare time or a phone into something that earns rather than entertains, that's a different rabbit hole entirely, and I've mapped out genuine options in 51+ real ways to make money online, most of which need wifi far less than people assume too.
The honest, unglamorous truth of this whole topic is that there's no permanent list you can trust forever, because updates change everything and store labels mean little. The method is the only thing that stays reliable: download while connected, then go dark and test before you need it to work.
If you want the full set, start at the Free Games to Play Offline and Online: Every Guide in One Place (2026).
Related: developers: guidelines and how to pitch.
Related: writing for us on gaming.
Frequently asked questions
How do I know if a game will work without wifi before I travel?
Download it the night before, put your phone in full airplane mode, and play through at least one complete round including a game over or level complete screen, since that's usually where hidden connection requirements show up.
Why did my "offline" game freeze even though the store said no wifi needed?
Most free games rely on ads or cloud saves to run, and even if the core gameplay works offline, the ad network call or save sync often doesn't, causing a freeze the moment you lose signal.
Are paid offline games more reliable than free ones?
Generally yes, because a game that already earned money from you upfront has less reason to need a live ad connection to survive, which makes it far more likely to run completely offline without stalling.
What's the best genre to look for if I want a truly offline game?
Classic puzzle games like solitaire, mahjong, and sudoku are consistently the most reliable offline category, since they were built as self-contained games long before always-on internet was standard on phones.