Windows 10 Notification with PowerShell
From WickyWiki
This script allows you to select the window from a list that you want to have as a borderless window that fills your screen. You could try this for a game that does not natively supports this function.
Note that some applications will override these settings.
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
$objNotifyIcon = New-Object System.Windows.Forms.NotifyIcon
$objNotifyIcon.Icon = [System.Drawing.SystemIcons]::Information
$objNotifyIcon.BalloonTipIcon = "Info"
$objNotifyIcon.BalloonTipTitle = "wzzup this is a title."
$objNotifyIcon.BalloonTipText = "WHATS UPPP THIS IS A PARAGRAPH!"
$objNotifyIcon.Visible = $True
$objNotifyIcon.ShowBalloonTip(10000)
Start-Sleep 500
Source: