Global game publisher GRYPHLINE is happy to announce its participation in Steam Next Fest with a playable demo for POPUCOM. The free demo for the upcoming multiplayer co-op puzzle adventure platformer will be available to download digitally on Steam starting on Oct. 14 at 10:00 AM PT through Oct. 21. The whimsical puzzle adventure is the latest from the creators of the beloved tactical RPG and tower defense hybrid hit, Arknights, and is coloring its way onto the PlayStation®4 and PlayStation®5 computer entertainment systems and PC via Steam and Epic Games Store.