Fallout Shelter launched on Android devices for free via Google Play overnight, and it has already been hacked.

Someone has hacked into the game's leaderboards and given themselves the top spot with a score of 2 billion.

Today’s launch includes all-new game updates (which have also been added to the game's iOS version), including the introduction of Mr. Handy – the ultimate robotic companion – as a premium reward.

Players can use him to collect resources in and outside of their Vault, and he can also defend a Vault from creatures and disasters, including new Deathclaw invasions and Molerat infestations.

The full change log via Bethesda:

◆ Overseers should be on the lookout for new threats to their Vault Dwellers. Some Vaults have reported attacks by burrowing Mole Rats and enraged Deathclaws – likely attracted by the sound of new construction.
◆ Vault-Tec has partnered with General Atomics International in order to offer Overseers their very own robot butler – the Mister Handy! Now you lazier Overseers have a friendly, entertaining alternative to tapping and collecting resources. (Crumpets not included.)
◆ Our engineers clearly underestimated the, *ahem*, usefulness of living quarters to stimulate Vault growth, resulting is gross overpopulation and decreased Vault efficiency. Rest assured, the simulation has been adjusted, and Vaults of all shapes and sizes should now run more smoothly.
◆ Not content with stealing your Vault’s resources, some rather enterprising Raiders have now resorted to stealing Caps as well. (If you haven’t armed your Vault Dwellers yet, now’s the time!)
◆ As Vault-Tec does not approve of the use of unsanctioned levitation technology, all Vault Dwellers that were found floating through the air have been grounded. Permanently.
◆ Some of the more difficult daily objective requirements have been adjusted to more obtainable levels. You’re welcome.
◆ Continued general maintenance to the Vault simulation. Because an efficient machine is a happy machine!

Featuring a 2D art style similar to the main games' Pip-Boy cartoon graphics, Fallout Shelter expands the lore of Fallout in an intriguing way, offering players a chance to create their own Vault to house and/or torment survivors.

Players will excavate and build nuclear shelters for Vault Dwellers to live, work, and love in. Managing a range of resources and room types, they'll have to keep their citizens healthy, happy, and safe from raider attacks.

Each dweller has their own stats, and can be sent on missions into the desert, socialise, and reproduce, ensuring a long life for the human race (until some guy called Gary clones himself and takes over the vault).