Sidekick Publishing and developer Randwerk have officially teamed up to bring WANDERBURG to a wider audience—and they’re kicking things off with a playable demo during Steam Next Fest. The open-world roguelike made a strong first impression during its breakout showing at the PC Gaming Show, where its reveal trailer quickly gained traction. Since then, the game has amassed more than 250,000 wishlists and drew over 126,000 players into a recent closed playtest. Now, fans can finally get their hands on it as part of Steam Next Fest, running February 23 through March 2. A Castle That Eats the World At…