- By clicking on the image 'Who is Number One' you will receive a clue about the current location of #1 (a Blimp like 'Test Auchan Marseille' if #1 is around 100m of the Blimp. Or a shortened address like 'rue de Paris, Aix-en-Provence' if there is no Blimp near #1).

- Then you become invisible to other players and have few minutes to localize yourself near #1 (less than 500m) and click on his avatar to become #1, after the attack (either successfull or not) , you will be localized back to your initial location and will be visible again.

Note1 : During an attack you become invisible so #1 dont see who is attacking him (and eventualy guess who will become #1).
Note2 : At the end of the attack your location will be set back to the location you were before the attack for the same reason as above.
Note3 : #1 is notified in real time of the number of attackers.
Note4 : A Cheating countermeasure is triggered when players try to play catchme/catchme and give them penalties

- #1 can not be disconnected.
- #1 can not stay at the same location more than 15min otherwise the game will choose a new #1 among the connected users.
- #1 cannot locate in a place that is not virtually accessible (in the middle of a lake for example), if so the game will assume it is a cheating attempt from #1, and then the next attacker will become the new #1.

Tips to play :
- There is no iddle delay between two attack.
- An attack can be canceled by clicking on the image “Who is #1?”
- The #1 location clue is given even if your are not connected.
- The attack radius on mobile phones has been doubled (1000m).
- It is possible to locate yourself on Blimps. Just make a search by keyword and click on the arrow near Blimps available in the result list.
- On mobile, the attack radius is 1000m, so it is easier to catch #1.
- If the situation becomes to perilous (many attackers), #1 can periodicaly re-locate himself to various location to counter attacks, he can even disconnect himself if he feels there is to much risks.
- #1 can change his avatar if he think he got located.
- #1 can protect himself during 15min by locating himself in a 'real' location that is difficult to find by 'virtual' means.
- Before attacking, players can try to locate themselves near the one they think who is #1 (by using different street number), but #1 may see them and guess who catched him.