Install & Account
PC Version Install
You can download, install, and play UNDECEMBER through STEAM
Installing and Playing UNDECEMBER
Push ‘Install’ from STEAM’s UNDECEMBER page to install UNDECEMBER. After the installation is completed, push ‘Play’ to launch the game client.
If there is an update available, the game will be updated first. You must push ‘Play’ again once the update is completed.
[UNDECEMBER on Steam]