It is set to open signup, so you can join without approval.
There is no obligation to report bugs, so feel free to play.

REVERSI xVSx is a party game where 1 to 10 people can play Reversi. You can play CPU battle or up to 5 vs. 5 online matches

Selectable designs

You can select from multiple types of stones, boards, terrain, and BGM used during battles.

You can use your own or prepared stones, boards, terrain, and BGM by reading them from local files on your PC.

Multiple game modes

In addition to normal battles, you can choose modes such as single-color battles and losing due to a wrong selection.

Online match

Up to 10 players compete on one board, divided into First and Second players.
The "selection position" where the stone is placed depends on the player's choice on each turn, and the player selects from "most selected", "first selected", etc.