The immensely popular mobile physics game, "Monster Strike," has been announced to be taken off the market in select territories. The game, which is a huge hit in Japan and other markets has reportedly not been doing so well in the United States and other English-speaking countries, which is why its developers have decided to completely shut down its English language version.

The game's Japan-based publisher, X flag, has just announced that it will be shutting down its English version on August 1. The company will remove the game from the Google Play Store and the iOS App Store on July 2, which will then be followed by its shutdown on the aforementioned date. All in-game purchases will also be disabled during its removal. Unfortunately, those who still have some purchases on their accounts will not get a refund.

"Monster Strike" is a physics mobile game similar to "Angry Birds" in that it utilizes a catapult system. However, the game also utilizes some monster-collecting elements similar to the "Pokémon" franchise. It manages to merge these two systems into a game that has been a huge hit in Japan.

According to Polygon, the company didn't really explain why they were shutting down the English version of "Monster Strike" and only mentioned that it was actually not as successful as they had hoped. However, that is quite contradictory to the recent reports regarding the game's revenue.

According to a recent SuperData Research finding, via Android Authority, the game apparently generated over $1.3 billion in 2016. During its peak, the free-to-play game was able to generate over $4.2 million in revenue per day. After the game was released it had gained over 14 million downloads in just its first year.

Based on the company's decision, it might be safe to assume that only a small portion of that revenue comes from English-language territories. "Mobile Strike" was officially dubbed as the biggest grossing mobile game in 2016, surpassing even Supercell's hit games, namely "Clash of Clans" at $1.2 billion and "Clash Royale" at $1.1 billion.