When you first start out in Valheim, you'll not only create your Viking character, you'll also create a "seed" for your game world. The seed is a code that corresponds to the locations of all the elements of the world when it's generated, dictating where biomes, resources, bosses, and everything else in Valheim is located. The game will randomly create seeds for you, but if you want more control, you can put in the seed code to spawn into a specific world. We've gathered all the info you need to know about how seeds work in Valheim, how to evaluate them, and which ones you might want to use as you're planning your Viking excursions.
Keep in mind that this guide is for Valheim players who aren't interested in the joy of exploration--much of what makes the game interesting is exploring your game world, finding what secrets it hides, and working to survive with imperfect knowledge of what you'll face. But if you want to fast-track your way through a Valheim run, set up the perfect place to build an awesome Viking base, or just have more control over your experience, use this information to pick the right seed for you and get everything you want out of your Valheim game world.