Today, Hop Step Sing! Kisekiteki Shining! (HQ Edition and Hop Step Sing! kiss×kiss×kiss (HQ Edition) got released on Steam. The games are about watching the idol group's concerts in virtual reality. Current special 20% off release price for both games is $3.99 or ¥446 until July 6. For more details, check out the store pages. Here's a trailer.
Official Website: http://hopstepsing.com/