"Portal: Revolution Mod, the Fan-Made Prequel Bridging Valve's Hits, Launches on Steam After Review Delay"

Portal: Revolution is a fan-created mod that serves as an eight-hour prequel to Portal 2, featuring 40 new fully-voiced test chambers, fresh puzzle mechanics, and a narrative that fills the gap between the original Portal and its sequel. The mod introduces new elements like a laser cube variant and a gel cleansing field, while also incorporating unused concepts like Pneumatic Diversity Vents. It aims to provide a challenging experience that picks up in difficulty where Portal 2 ended, yet ensures that players are taught the necessary skills through level design. The mod is now available after a slight delay due to Valve's review process.