"Pokemon" fans will surely be happy knowing that the mobile app "Pokemon Go" has finally arrived. The said app, which allows them to make their own "Pokemon" adventure in the planet, is now up for registration in the United States.

According to Engadget, Niantic Labs along with The Pokemon Company have released the app's Field Test phase. Users will be chosen out accordingly and will be given the chance to try out the upcoming game as soon as everything is set.

It is worth noting that Niantic Labs is famously known for developing yet another reality-based app called Ingress. And like it, "Pokemon Go" will have players get out of their sofas and explore the outdoors, as they aim to acquire various "Pokemons," battle with other players and complete several challenges.

However, the field test, which is built for both iOS and Android, will have to have users keep the gaming experience confidential. In fact, the progress of the game will be taken out as soon as the full "Pokemon Go" game reaches its debut stage this year.

SlashGear reports that participating players who will break the rule will be banned. Also, Niantic is said to remove all gaming data during the "Pokemon Go" field test in hopes to keep the game under wraps.

Although the registration process has no official deadline, interested participants are warned that it may close out without any prior notice. Hence, "Pokemon" fans in the U.S. are encouraged to head out to the "Pokemon Go" website as soon as they can.

The field test, which others deem as another term for closed beta testing, is currently available in limited countries so far, namely, Australia, Japan, New Zealand and the United States.

As of this writing, the full version of the game is yet to have an official release date.