Minecraft systemd unit file that uses tmux instead of screen

gistfile1.txt

[root@plex ~]# cat /etc/systemd/system/[email protected] 
[Unit]
Description=Minecraft Server %i

[Service]
WorkingDirectory=/opt/minecraft-%i
User=mcserver
Type=forking

ExecStart=/usr/bin/tmux new-session -s mc-%i -d '/bin/java -Xmx2048M -jar minecraft_server.jar nogui'

ExecStop=/usr/bin/tmux send-keys -t mc-%i:0.0 'say SERVER SHUTTING DOWN. Saving map...' C-m 'save-all' C-m 'stop' C-m
ExecStop=/bin/sleep 2

[Install]
WantedBy=multi-user.target

#########
# HowTo
#########
#
# Create directory in /opt/minecraft-XX where XX is a name like 'survival'
# Add minecraft_server.jar into dir with other conf files for minecraft server
# 
# Enable/Start systemd service
#    systemctl enable minecraft@survival
#    systemctl start minecraft@survival
#
# To run multiple servers simply create a new dir structure and enable/start it
#    systemctl enable minecraft@creative
#    systemctl start minecraft@creative

I'm just gonna leave this here https://superuser.com/questions/1581577/running-two-tmux-sessions-as-systemd-service/1582196#1582196