Oniken is an action platform game available on Nintendo Switch, drawing heavy inspiration from the 1980s gaming era. Set in a post-apocalyptic world dominated by the evil military organization Oniken, players control Zaku, a ninja mercenary, who joins the resistance against this oppressive force. The game features retro-style graphics and sound design that evoke the classic 8-bit era, delivering an authentic nostalgic experience. Players will encounter over 18 engaging boss fights across six missions, each consisting of three stages, culminating in an extra mission after completing the game.

The gameplay is designed to challenge players with its high difficulty level, reminiscent of classic action titles, and includes a Boss Rush mode for those seeking further challenges. For those who thrive on difficulty, the HARDCORE MODE is available. Each purchase also includes digital versions of the game manual and the original soundtrack, enhancing the overall experience of this retro-inspired action game.