Why were you charged so much for using data abroad?
Because roaming is billed by your home operator, not the country you visited, and that operator sets the price without you seeing it coming until the bill arrives. It wasn't your oversight: that's how the system is designed, and that's why so many travelers end up checking their phones with dread.
If this has already happened to you, the first thing to understand is that you didn't do anything unusual. You opened the map, answered a message, let an app update itself in the background, and your cell phone connected to a foreign network because that's how it works by default. The charge doesn't appear at the moment: it accumulates during the trip and is reflected later, when you can no longer do anything to avoid it. That's the most unfair part of traditional roaming: you find out late and pay anyway.
While you resolve that issue with your operator, the most practical thing is to turn off mobile data and activate airplane mode for the rest of the trip. And since without data, dead time at the airport, on the bus, or in the waiting room feels longer, here's a real list of games that don't need a single signal bar, plus the underlying reasons why this shouldn't happen again at your next destination.
What games can I play on a trip without internet?
There are three categories that cover almost any travel situation without signal: paper-and-pencil games (they only need your memory), physical or pocket card games, and apps that you downloaded in advance and run completely on your phone without requiring a connection. The key is to prepare the right category depending on whether you are traveling alone, as a couple, or in a group.
If you're traveling alone, offline apps and paper-and-pencil games like Sudoku or crosswords are best for filling long dead times, such as a layover or a night flight. If you're traveling with company, verbal and observation games—those that don't require a board or screen—are the most enjoyable because they turn waiting into conversation. And if you're traveling in a group, physical cards are still the most reliable option: they don't depend on battery, airport Wi-Fi, or everyone having the same app installed.
What 10 games can I play without internet?
This is a practical list, ordered from least to most preparation needed. The first ones require nothing; the last ones ask you to download something before leaving home or the hotel with Wi-Fi.
| Game | Players | What you need | Why it works for travel |
|---|---|---|---|
| I Spy | 2 or more | Nothing | Ideal for short waits, lines, and boarding |
| 20 Questions | 2 or more | Nothing | Fills long journeys without tiring |
| Word Chain | 2 or more | Nothing | Played by talking, works in any language |
| Hangman | 1 to 4 | Paper and pencil | Reliable classic for kids and adults |
| Paper Battleship | 2 | Graph paper and pencil | Drawn in two minutes, lasts for hours |
| Cards (UNO, Spanish deck) | 2 to 4 | Physical deck | Doesn't depend on battery or screen |
| Sudoku or Crossword | 1 | Pocket notebook or downloaded app | Perfect for solo travel and long flights |
| Pocket Chess | 2 | Magnetic travel set | Entertaining without noise, suitable for planes |
| Printed Trivia or app with downloaded pack | 2 or more | Questions already saved on the phone | Turns waiting into a collective experience |
| Solitaire | 1 | Physical deck or offline app | The classic for filling any time gap |

What to play while traveling by plane, bus, or car?
It depends on the leg of the journey. On a plane, quiet games that don't bother your seatmate work best: pocket chess, Sudoku, a puzzle app downloaded before boarding. On a bus or car, where movement makes it harder to write or look at a fixed screen, verbal games win: I Spy, 20 Questions, guess the humming song.
If you're driving, always choose games that don't require looking at anything: counting license plates of a certain color, guessing cities by their initials, or simply chaining stories among all passengers. These keep the driver awake without distracting them, and they don't depend at all on having a signal.
What games can I play in airplane mode?
Airplane mode disconnects mobile data, but on most cell phones, it doesn't automatically turn off Bluetooth: you can reactivate it manually even with airplane mode on. This means that two cell phones can pair via Bluetooth or Wi-Fi Direct and play local games of chess, checkers, or some digital card games face-to-face, without using a single megabyte of data or relying on the airplane's network.
Aside from that, any app you downloaded before takeoff—and that doesn't depend on a server to function—runs normally in airplane mode: Sudoku, Solitaire, chess against the machine, most puzzle games. The difference is always made by what you downloaded beforehand, not what you try to download during the flight.
What board games or pocket cards are good for group travel?
When you're traveling with more than two people, physical card games are still the safest bet because they don't depend on everyone having battery, the same app, or the same operating system. A deck of UNO, a Spanish deck of cards, or a travel domino set will solve hours of waiting in terminals, camps, or hotel rooms without relying on a single signal bar.
Roaming isn't expensive because crossing a border costs more: it's expensive because your home operator continues to set the price of your data even if you're no longer using their network, and that difference is what ends up on your bill.
Foldable or magnetic board games—chess, checkers, backgammon—are also worth it if you're traveling in small groups and want something more leisurely than cards. They take up little space in your luggage and, unlike any app, they will never ask you to update or connect to anything.
Which game apps work offline if I download them beforehand?
Most puzzle games, chess against the machine, Sudoku, and digital solitaire games are designed to run offline once installed: the game lives on the phone, not on a server. The common mistake is to assume that because an app was downloaded from the "internet," it needs to stay connected to work; in reality, except for games with online multiplayer or global leaderboards, almost all of them run perfectly in airplane mode.
The practical recommendation is simple: before leaving home, with airport or hotel Wi-Fi, open each app at least once and play a test game. This confirms that it has already downloaded everything it needs—levels, question packs, boards—and that it won't ask for data in the middle of a flight or a journey without signal.

How does roaming actually work and why does the bill arrive later?
International roaming works like this: when your cell phone enters another country, it connects to a local network with which your home operator has a commercial agreement. You remain a customer of your usual operator, but you are using another's infrastructure. This agreement between operators is what defines how much you will be charged per megabyte, minute, or message, and that price is almost never the same as what you pay in your home country.
The problem is not just the price: it's when you find out. Many operators accumulate roaming consumption and reflect it in the normal billing cycle, weeks after the trip, when it's already impossible to act. Some apps continue to synchronize in the background—email, photos, updates—even if you are not actively using them, and that silent consumption is also billed.
Understanding this doesn't change the bill that has already arrived, but it does explain why it wasn't your mistake: it's how the traditional roaming system is built, where the price is set by the home operator and not by you. The alternative that avoids this problem from the root is to use a local data plan or an eSIM purchased before the trip, with a price you know in advance and that doesn't depend on any agreements between operators that you don't control. You can see how this compares in more detail in this comparison between eSIM and roaming.
What is the cost of sticking with roaming versus using a data eSIM?
The most important difference is not just in the final amount, but in when you know it. With roaming, the real price is discovered after the trip. With an eSIM purchased before leaving, the price is set beforehand and does not change no matter how much you use the map, translator, or chat with your family.
| Factor | Roaming with your home operator | International data eSIM |
|---|---|---|
| When you see the charge | After the trip, on your statement | Before traveling, fixed price from purchase |
| Who sets the price | Your home operator, according to their agreement with the visited country | You, by choosing the data plan you need |
| Activation | Automatic upon crossing the border, often without warning | Manual, in approximately 1 minute, when you decide |
| Declared coverage | Depends on your operator's roaming agreement | More than 200 destinations available |
| Activation window | Not applicable, activates automatically upon arrival | Up to 180 days from purchase to activate when needed |
| Support if something fails | Your operator's line in your home country | Email and WhatsApp, 24/7, in all languages |
If your next trip is already on the calendar, the way to avoid repeating this story is to stop relying on your operator's automatic roaming and buy the destination's data plan in advance. You can check the available plans for your next destination in the international eSIM collection, compare coverage, and choose the one that suits the actual days you will be away.
Frequently asked questions
Why was I charged roaming if my plan included data?
Because the data plan you contracted in your country normally does not include usage abroad, or includes it with different limits. International roaming is governed by a separate agreement between your operator and the operator of the country you visited, with its own price, and that charge is added separately to your usual bill.
Does airplane mode stop roaming immediately?
Yes, turning on airplane mode instantly cuts off mobile data connection, including roaming. The problem is that it also cuts off everything else, so many travelers avoid it for fear of losing maps or messages, and that's where the consumption that spikes the bill ends up appearing.
Can I play online with friends without using data?
Only if they are on the same local network, for example the hotel Wi-Fi, or if the game allows direct connection via Bluetooth or Wi-Fi Direct between nearby phones. Multiplayer that depends on an internet server does require data or Wi-Fi, without exception.
Do games without internet use more battery than those that use data?
Generally, they use less, because they are not constantly searching for a signal or syncing with a server. The screen being on is still the biggest battery drain, no matter what happens with the connection.
Does a data eSIM work the same as roaming, but cheaper?
It works differently in one key aspect: with an eSIM, you choose and pay for the plan before traveling, so you know the cost from the beginning. With your home operator's roaming, the price is defined by an agreement between operators that you don't see until the bill arrives.
Do I need Wi-Fi to download games before traveling?
Yes, any app or level pack is downloaded only once, ideally with your home or airport Wi-Fi before boarding. Once installed, most single-player games do not require a connection again.
What if my phone is not eSIM compatible?
Most recent mid-range and high-end phones are usually compatible, but it's worth checking before buying. You can verify it in this list of eSIM compatible phones before your next trip.
How do I install an eSIM if I've never used one?
The process takes a few minutes and is done from your phone settings, by scanning a QR code you receive by email after purchase. You can follow the complete step-by-step in this guide to installing an eSIM.
In summary
The bill that caught you by surprise wasn't because you did something wrong: it was the result of how traditional roaming works, where the price is defined by an agreement between operators and you only find out when it's too late. While you sort that out, the offline games on this list will get you through any wait, plane, or journey without a signal.
To avoid a repeat on your next trip, the concrete solution is to stop relying on automatic roaming: check if your cell phone is compatible, install the eSIM calmly before leaving home—you have up to 180 days from purchase to activate it—and thus know the cost from day one, without surprises on your statement upon return. If you want to first understand exactly what an eSIM is and how it differs from the physical SIM you use today, you can check out this simple explanation of what an eSIM is or the complete guide to traveling with an eSIM. And when you're ready, the international eSIM collection lets you compare plans by destination before your next flight.






