Vocaloid: A New Adventure

Vocaloid: A New Adventure was a multiplayer platformer created by Asari Studios and Mikudayo Interactive, and developed by A.K.A Cartoon and Mikudayo Interactive in 1998 based on Vocaloidia Adventures: A New Era. The game was released on December 1, 1998, on the same day Asari Interactive opened its doors. It was the first Vocaloid game to not feature the Vocaloid soundtrack, and used another soundtrack from Nintendo.

Gameplay
It's basically a mix of Sonic Mania and SNES games. In this game, you basically run and jump through many levels while defeating enemies and bosses with special weapons. On Windows Microsoft, there is a multiplayer lobby where you can customize you very own Vocaloid and play story mode, play other people's levels, and create your own levels, all while you play with friends.