Challenge games for friends online are only fair when both groups face the same test. In Bomb Appétit, two missions give every team an identical bomb: First bite and Button up. Defuse one, send your friends the mission and its leaderboard, set a deadline, and let the board's verified times settle who won.
Why a friends challenge needs the same bomb
A challenge compares two numbers, so the numbers must come from the same problem. Most missions deal a fresh bomb every attempt, with different wires, edgework and module positions. First bite and Button up do not. Every team on those two missions gets exactly the same bomb, and their leaderboards say so above the table.
The two fixed-bomb missions are the first two in Section 1. First bite has a single Wires module, five minutes and three strikes. Button up adds a Big Button to the wires, again with five minutes and three strikes. Both use the standard manual, rule seed 1. Since the bomb and the manual are both fixed, the correct actions are the same for every team that plays.
It also does not matter how each group sits. One group can crowd round a laptop in a kitchen while the other plays across three cities in an online room joined with a five-letter code. The bomb is the same either way, and the board treats both runs the same. The only difference is the call: the game has no voice chat, so a remote group needs a phone or video call running beside it.
That makes a clean race. If your group defuses Button up with 4:05 left and another group manages 4:20, the other group really was faster at the same job. Nothing about the deal helped either side.
The fixed bomb has a side effect worth knowing before you dare anyone. A group that plays the same bomb twice can remember what worked the first time. That is not cheating, since the game is open about it, but it changes what a challenge measures. A first attempt tests reading and talking. A tenth attempt tests memory and hands. Agree up front which one you are comparing.
Which missions make a fair challenge between friends?
First bite and Button up make the fairest challenges, because they are the only two missions with the same bomb for everyone. A random-bomb mission can still make a fair contest, but only when each group plays several attempts and you compare their best or their typical time, not a single run against a single run.
Some random-bomb missions are fairer than others. Strange symbols and Table for three always deal one each of Wires, Big Button and Glyph Keypad, because three modules are drawn from a pool of three and the deal never repeats a module before the pool runs out. The edgework and the details inside each module still change, but at least both groups face the same three kinds of puzzle.
Missions with larger pools spread more. Mixed plate draws five of six modules, so one group's bomb may hold Recall while the other's leaves it out. The final mission, by contrast, always holds one of all eleven, so its spread comes only from the details. Here is a quick guide, based on the mission data:
| Mission | Same bomb for everyone? | Module set | Fair challenge format |
|---|---|---|---|
| First bite | Yes | Wires | Single best by a deadline |
| Button up | Yes | Wires and Big Button | Single best by a deadline |
| Strange symbols | No | One each of three, every time | Best of five attempts each |
| Mixed plate | No | Five of six, varies | Best of several, with care |
| Bomb Appétit (final) | No | One each of eleven, every time | Best of several, plenty of nerve |
The right-hand column is a suggestion. Groups with more time can play more attempts on the random-bomb missions, which makes luck matter less.
Sending the challenge to friends: mission, board link and deadline
A good challenge message names the mission, links its leaderboard, states the rules and gives a deadline. The leaderboard link matters most, because the board shows each group's verified time and nobody has to trust a screenshot. Keep the message short enough to read in a chat preview.
The board for any mission sits on the leaderboard page, with a picker for the mission. The address for one mission adds its id, for example /leaderboard?mission=button-up. Paste the full address into your message so friends land on the right board.
Here is a template, with example values in brackets:
Bomb challenge: [Button up] Board: [bombappetit.com/leaderboard?mission=button-up] Our time: [4:05 left, 0 strikes], Defuser [Sam] Rules: sign in before you play, only the Defuser's best defusal counts, any number of Experts Deadline: [Sunday 9 pm] Loser picks the next mission.
A few notes on the rules line. Only signed-in players are ranked, and the board lists the Defuser, so whoever holds the bomb must sign in before the attempt. Guests can still play, but their runs will not appear. If you want to limit attempts, say so, since the board itself keeps only each Defuser's best.
Here is an example result after the deadline, with invented names and times:
| Defuser (example) | Time left | Strikes | Place |
|---|---|---|---|
| Priya | 4:20 | 1 | 1st |
| Sam | 4:05 | 0 | 2nd |
| Leo | 4:05 | 1 | 3rd |
Priya wins despite a strike because the board compares time left first. Sam beats Leo on the same time because strikes break the tie. The guide to how the board orders runs explains the full order, including what happens when even the strikes match.
Can friends challenge each other one on one?
Yes. A one-on-one challenge is two Defusers racing the same mission in separate runs, each with their own Experts or alone. The board lists each Defuser once, by their best defusal, so the two rows can be compared directly. The board's filter can also show solo runs separately from runs with Experts.
For 1v1 games with friends, a few choices keep it fair:
- Pick a fixed-bomb mission, so both Defusers face the same bomb.
- Use the same number of Experts on both sides, or none.
- Do not share Experts between the two runs. An Expert who helped the first Defuser already knows the answers on a fixed bomb.
- Agree whether practice runs are allowed before the deadline.
The board's filter has three settings: Everyone, Solo and With Experts. A run counts as solo when no Experts joined through an online room. That includes a lone player reading the manual for themselves, and it also includes a same-room game on one device, where friends read a paper or phone manual the game never sees. With Experts covers online rooms where at least one Expert joined. For a one-on-one, pick one filter and tell both Defusers which, so neither side compares a lone run with a full room.
A one-on-one also raises the question of who goes first. On a fixed bomb, going second is an advantage only if the second Defuser watches the first, so keep the runs private until the deadline. Each Defuser can then post their result in the chat, and the board confirms it. If the two times match to the second, the board's tie-breaks still order them, so there is always a winner.
Finding a friend's row can take a moment on a busy board. The guide to finding your row when you are not on page one shows where to look. If both groups want to play on the same evening as a head-to-head event, the guide to two teams racing one mission board covers who sits out and how to keep the waiting team from overhearing.
The challenge mistake: comparing one random-bomb run against another
Comparing one random-bomb run with one other run settles nothing, because each team faced a different bomb. One group may have drawn simple wires and an easy serial number while the other drew a harder module mix. The faster time might just be the kinder deal. Use a fixed-bomb mission, or compare several runs each.
The difference between deals can be large. On a random-bomb mission, one Wires module may hold three wires and another six, and a rule may hinge on edgework one bomb has and another lacks. A team that defused a gentle bomb with a minute to spare has not beaten a team that defused a hard one with forty seconds left.
When a random-bomb mission is the only option, two fixes help, and both cost only a little patience. Compare best-of-five times rather than single runs, since a team's best over five attempts is less likely to be one lucky draw. Or compare averages, written down by hand from each results page.
A group serious about the board can turn a challenge into a longer climb. The guide on climbing a leaderboard when only your best run counts covers which mission to retry and when to stop. For the full picture of how a defusal reaches the board in the first place, see the guide to leaderboards and how a defusal gets ranked.