The WiiWare image for Rotohex.
The object of the game is for the player to form hexagons of a solid color (called a "Hex") by rotating into place and combining together colored triangles which drop down from the top of the screen. The player is required to create a certain number of Hexes in order to pass each stage. Initially the game starts with triangles encompassing only two colors, with more colors eventually being added to the mix. In addition, glowing triangles give the player power-ups such as creating a hole in the bottom of the play area, or swapping colors. There are eight different colors in total.
Along with a solo mode which involves progressing through levels, the game features unlockable endless play and sprint modes along with competitive and co-operative multiplayer.
Rotohex was originally released for the Game Boy Advance as Dialhex under the Bit Generations label on July 13, 2006 exclusively in Japan. This version was announced on June 1, 2006. Nintendo announced that they would be giving free copies of the games in the series to 700 members of the Club Nintendo web site in exchange to feedback on them, though only to people who own a Game Boy Advance or Nintendo DS. Nintendo filed for an ESRB rating for this title in the US. It was later remade for the Wii's WiiWare service in the Art Style series. Both versions were developed and published by skip Ltd. and Nintendo respectively.
IGN gave Rotohex an 8/10, calling the game "one of those awesome 'zone out' matching puzzlers" which carries an "unbelievable addictiveness" in its gameplay that is "almost as addictive as Marathon Mode is in Tetris". It was nominated for Best Puzzle Game for the Wii by IGN in its 2008 video game awards.
The logo for game cameos as a collectible sticker in Super Smash Bros. Brawl.