Google Play Birthday

This event started on March 5, 2014 and lasts for 7(?) days. It is similar to the Ice Giant event. In-game description:

Joining the battle
You can do this in several ways. Remember that if you start a battle yourself and you do not want to have the possible crew limited to friends only, you need to untick the "Accept friends only" button (a small icon in the lower right corner on the screen). When you have already joined a battle you did not start yourself, you can only invite your friends.
 * Starting a battle yourself: it is difficult if you do not have many piastres to spend and are not eager to spend approximately 6 hours keeping an eye on the battle.
 * Finding an ongoing battle: instead of starting your own battle, you can search the currently ongoing ones and try to join one. Do this by clicking on "Ongoing battles" button (right side of the event's screen). You can see how much energy the enemy giant has (the number listed on the right side from the heart symbol), how many people are currently fighting alongside (up to 5, when their number reaches 5, nobody can join) and the time left until the giant wins if you do not beat it down (the maximum number you can see is 5 hours 59 minutes, because each battle can take up to 6 hours).
 * Accepting an invitation from a friend: when you participate in a battle and your crew is smaller than 5 people, you can invite your friends by clicking "Invite" button below the giant's icon and choosing people from the list that opens up afterwards.

Reward distribution
In case the crew wins, everybody gets presents, some experience and, in case of the first 3 places (that are marked with star-shaped medals) a certain amount of additional awards:
 * When Android is defeated 2500 XP is divided on the players participating. If a player does 50% of the damage he will get 1250 XP, a player doing 10% of the damage will get 250 XP and so on.
 * 1st place: every 20 minutes the Android gives you a pile of presents; the tribute time lasts 2,5 hours. The 1st place also gets 3 piastres and a bunch of experience points.
 * 2nd place: every 20 minutes the Android gives you a pile of presents; the tribute time lasts 1,5 hours.
 * 3rd place: every 20 minutes the Android gives you a pile of presents; the tribute time lasts 50 minutes.
 * 4th place: a single pile of presents.
 * 5th place: a single pile of presents.
 * WARNING: if the 5th place dealt approximately less than 5% of the overall damage, the chest you get is called Pacifist Chest, which contains only 1 shell, 1 pearl and 1 collect all profit scroll; this pack's contents does not change.

If the crew loses, everybody will get some experience depending on how many damage points you got, but nothing else.

Presents contents
These are the different presents you can receive after fighting the Android. If you have received a present that is not listed here, please let us know the contents in the comments. Also do so in case you see a different amount of something in the contents.

Tips

 * Before you attack, if you can, try to let some fellow players know you want to start a battle. It makes the whole affair much more probable to win if you all do not have to chase each other on the "Ongoing battles" page. It is allowed to advertise for a battle in the comments section below this page. But for battles only, NO FRIEND REQUESTS! You are allowed to place your in-game contact information on your personal wiki profile.
 * Try to keep at least 5 energy zaps for the peddler selling weapons for zaps - it is the easiest way to get some weapons and he also drops icicles (usually 3 of them), which are needed to start a battle (it has nothing to do with real friends). If you don't have enough zaps to take down that the peddler selling weapons that is currently on your island and about to disappear, take note of how much time you need to recharge and then click on the Android. A new window opens and as a result all movement of the peddler is suspended but your energy bar will continue to recharge. Wait for the amount of time to pass to recharge your energy zaps, close the Android window and you will find the peddler in the same spot ready to be zapped.
 * You need (something?) to start a battle. They are given every time you accept the peddler's offer. Alternatively, you can buy them for 1 piastre each from the resource tab, but it is definitely not a good idea in comparison to the price.
 * If the crew consists of people on levels that vary drastically, if you are okay with accepting smaller awards (in other words, you focus on winning as many battles as possible in order to gain awards connected with this), it would seem profitable for all - in a long run - that the person possessing some free-to-spend piastres may keep an eye on the battle and even be in charge of pumping the necessary high-end weapons into the game in the critical moment. This requires some contact between the players, though, but again, the strategy seems worth trying.
 * If you try to join the battle whose crew has already lowered the Android's health below 2000, you are likely to get a warning "This was a great battle! Too bad you weren't there!". It is suspected as a way to lure as many people as possible into either starting their own battles (which usually requires spending some piastres or at least a lot of time and money for buying high-end weapons) or engaging in losing ones.