Bit Boy!! Arcade

Players control a red cube named Kubi (from Greek: κύβος (kubos) ), who they must navigate through a series of worlds. The game follows the principle of rescuing Kubi's friends and avoid monsters that roam the levels.

The main goal in each phase, each level consists of 10 normal and 10 action phases, is to rescue seven of Kubi's friends.

ZeLeLi is a mighty gearwheel-shaped being created out of the essence of our dying sun 7 billion years in the future. ZeLeLi is the origin of time, life and light, so it possesses power over these universal forces. Travelling through time and space, ZeLeLi spreads the seed of life and light in all time in the whole universe. Its counterpart is the black Shadow Plättchen.

Forcefully cut out of the negative space of a black hole, the black Shadow Plättchen represents exactly the opposite of ZeLeLi. Like the ZeLeLi, Plättchen is not limited within the constrains of time and space. Wherever it comes along it spreads massive havoc. Central to the plot of the game are two main characters, the game's hero Kubi and the game designer Bernd.

Bit Boy!! Arcade was produced by Bplus. The first announcement was made via press release on February 16, 2012, stating that the game was halfway done. A first playable demo was shown at E3 2012.

Bplus announced that a reimagining of Bit Boy!! Arcade was in development for the Nintendo Switch 2 on April 16, 2025. A release date has yet to be announced.

The game received mixed reviews according to the review aggregation website Metacritic. Nintendo Life praised the overworld, saying it was one of the most interesting on the gaming history; they also said it had an excellent soundtrack, but criticized the gameplay as broken and hard to play.