A mobile game leaderboard run in Bomb Appétit needs no app. The bomb runs in the phone's browser, and a signed-in Defuser who defuses a mission there is ranked on the same board as a laptop player. A phone handles the early missions well. For long bombs on the bigger case, a laptop is easier.
Can a mobile game leaderboard run happen in a phone browser?
Yes. Bomb Appétit is a website, not an app, and it runs in any recent version of Chrome, Firefox, Safari or Edge on a phone, tablet or computer. Sign in with GitHub in the phone's browser, open a mission, defuse it, and the run is checked and ranked the same way as anywhere else.
There is nothing to install and no store page to find. The game has no mobile app at all, so the browser is the only way to play on a phone. That also means the same address works on every device in the group, which helps when friends arrive with a mix of phones and laptops. The full list of supported browsers and devices is in which browsers and devices run the free game.
A phone can take either job. As the Defuser, it shows the bomb and records every action for the server to replay. As an Expert, it shows the manual, and in an online room it also shows the timer, the strike count and how many modules are solved. The game's own FAQ is plain about the trade-off: the bomb is easiest to handle on a bigger screen, and the manual reads well on anything.
Sign-in on a phone works like sign-in on a laptop. You need a GitHub account, and you must be signed in before the bomb starts for the run to be ranked. If you also play on a laptop with the same GitHub account, your progress and your rows are shared between the two.
Which missions fit a phone screen for a mobile leaderboard run?
The smaller the bomb, the better it fits a phone. Every Section 1 mission puts one to four modules on the 3x2 case, and those fit a phone screen comfortably. Section 3 brings up to eight modules and needy ones that need quick taps. Double shift is a different object: seventeen modules on the 4x3 case.
The case sizes explain the jump. A 3x2 case has two faces of six slots, with one slot taken by the timer, so it holds up to eleven modules. The 4x3 case has two faces of twelve slots, room for twenty-three. Nineteen of the twenty missions use the 3x2 case. Only Double shift uses the bigger one, with fourteen regular modules and three needy modules spread across both faces.
On a phone narrower than a typical laptop window, the game starts the Defuser in the 2D view. That view lays the whole case out flat, front face, back face and the edgework around the edges, so nothing is hidden behind a rotation. On a phone it is usually the better choice. The trade-offs between the two views, for any device, are covered in choosing the 2D or 3D bomb view.
Which device to use as the bomb
The table gives our suggestions, not rules from the game. Your own phone size and eyesight will shift them.
| Bomb device | Section 1 (1 to 4 modules, 4 to 5 min) | Section 3 (3 to 8 modules, needy from mission 3) | Double shift (17 modules, 4x3, 15 min) |
|---|---|---|---|
| Phone | Good. Few panels, large enough to tap | Workable. Needy modules interrupt on a small screen | Hard. Lots of scrolling between panels |
| Tablet | Good. Room to spare | Good. Panels stay readable | Workable. Long session, steady grip needed |
| Laptop | Good, but more than you need | Good. Easiest for needy modules | Best choice. Whole case readable at once |
For a first ranked run on a phone, pick a Section 1 mission. Quick snack, with four modules in four minutes, is a good test of whether the phone suits your hands. If the panels feel cramped there, a later mission will feel worse.
Section 2 sits between the two columns. Its missions stay on the smaller case with no needy modules, but Mixed plate and Rush hour carry five and six modules. On a phone, try one of the three-module missions first, such as Echo chamber, before taking a six-module bomb onto a small screen for a ranked attempt.
Phone as the manual, laptop as the bomb
On a mixed night, give the laptop to the Defuser and the phones to the Experts. The bomb needs space, precise taps and a clear view of small details. The manual is pages of rules and tables that scroll well on a small screen, and each Expert can hold their own copy.
The setup takes a minute. The Defuser opens the bomb on the laptop. For same-room play, each Expert opens the manual for rule seed 1 on their phone, which matches every mission except the last one. For a team run that names the Experts on the board, the Defuser creates an online room instead and reads out the five-letter code, and each phone joins it as an Expert.
Phones in a room have an advantage over phones in the same room without one. They show the countdown, the strike count and how many modules are solved, so an Expert knows how much time is left without asking the Defuser. The bomb itself is never sent to an Expert's phone. The Defuser still has to describe everything.
With several Experts, split the manual by phone. One Expert takes the wire modules, another takes symbols and words, a third watches for needy modules. Each phone stays on its own pages, which cuts down scrolling. If a phone dies mid-run, the printed manual is a good backup.
A tablet sits between the two. It can hold the bomb well for most missions, or show two manual pages side by side in a split screen if your tablet supports that. If the group has one tablet and one laptop, use the laptop for Double shift and let the tablet hold the bomb for shorter missions.
Is a phone run ranked the same as a laptop run on the mobile leaderboard?
Yes. There is one board per mission, not one per device. A phone run and a laptop run on the same mission sit in the same table, ordered by the same rule: more time left first, then fewer strikes, then whichever run was saved first. The board does not record what device held the bomb.
The server treats every run the same. It replays the recorded actions with the same engine on the bomb it issued, and it lists the run only if the replay ends the same way and the further checks pass. A phone has no special allowance and no extra hurdle.
That makes the device a strategic choice. A phone Defuser competes against laptop Defusers on equal terms, so a cramped screen is a real cost in seconds. For a serious climb on a mid-sized mission, move the bomb to the biggest screen you have. Our walkthrough of a two-player campaign through 20 missions suggests how a pair can share devices across every section, and our plan for a co-op campaign over four nights does the same for a bigger group.
Your progress also follows you between devices once you are signed in. Defuse First bite on a phone at lunch, and the missions page on your laptop that evening shows it as defused, with your time left and your place.
The mobile leaderboard mistake: a notification in the middle of a run
The phone mistake that costs the most runs is leaving notifications on. A banner sliding over the bomb can hide a panel at the worst moment, and tapping it takes you out of the game while the countdown keeps going. Turn on your phone's do not disturb mode before the bomb starts.
The clock does not pause when you leave. Bomb Appétit measures the countdown from the moment the bomb started, so time spent in another app is time lost. If you come back to the same tab, the bomb resumes with whatever time is left. If the bomb ran out while you were away, that run is over and the next one deals a fresh bomb.
Calls are the same problem in a bigger form. If your group talks over a phone call while you defuse on that same phone, the call app and the game compete for the screen. Use a second device for the call, or play in one room.
A few more checks help a phone Defuser. Charge the phone or plug it in, since a long mission with the screen on drains a battery. Set the screen to stay awake for longer than the mission's clock, so it does not dim during a long read from the manual. Close other heavy tabs. And hold the phone the same way for the whole run, since turning it reflows the layout.
Once the phone is quiet, sign in and pick a short mission from the missions page. If the run goes well, open the mission's board and see where a phone run lands among the laptops.