Controlling a paddle-like craft known as the Vaus, the player is tasked with clearing a formation of colorful blocks by deflecting a ball towards it without letting the ball leave the bottom edge of the playfield. Some blocks contain power-ups that have various effects, such as increasing the length of the Vaus, creating several additional balls, or turning the Vaus into a laser cannon. Other blocks may be indestructible or require multiple hits to break. Early location tests for Arkanoid surpassed Taito's initial expectations. It became a major commercial success in arcades, becoming the highest-grossing table arcade cabinet of 1987 in Japan and the year's highest-grossing conversion kit in the United States. The game was commended by critics for its gameplay, simplicity, addictive nature, and improvements over the original Breakout concept. The game revitalized the genre and set the groundwork for many games to follow. Arkanoid was ported to many home video game platforms, including the Commodore 64, Nintendo Entertainment System, ZX Spectrum, and (years later) mobile phones, and it spawned a long series of sequels and updates over the course of two decades.