Honkai Star Rail Simulated Universe Guide 2026: Blessings, Planar Ornaments & Why It Matters

The Simulated Universe is the only way to get Planar Ornament sets in Honkai: Star Rail, which means every character without them is permanently missing half their gear. This guide covers how run structure works, how Blessings and Curios combine into broken builds, the extended modes that exist in the current version, and why difficulty tiers scale the rewards you need for endgame.

Simulated Universe is a roguelike game mode where the player will build a team of four Characters to challenge enemies in an enclosed world with the goal of clearing it by defeating the boss at the end, developed by Herta aboard the Herta Space Station. The gameplay revolves around collecting upgrades known as Blessings to enhance the team’s power and completing stages containing progressively more difficult enemies. You choose a Path at the start of each run, which determines the pool of Blessings available—and since Blessings stack exponentially, the same team can feel completely different depending on what the run offers. This game mode will unlock shortly after you finish a side quest given to you by Herta after you finish the tutorial mission and can be entered through the Master Control Zone in Herta’s Space Station.

Planar Ornaments can only be farmed from Herta’s Simulated Universe. Regular relic domains drop the four-piece Cavern sets, but Planar Ornaments—the two-piece sets that occupy your character’s Planar Sphere and Link Rope slots—come exclusively from here. Planar Ornaments are wearable equipment that provide a significant boost to the character’s stats. Only two slots for this equipment are available for each character. Without them, you are running every character at half strength. That single fact makes the Simulated Universe mandatory, not optional, no matter how much you want to avoid it.

You will be allowed to farm these items once you reach World 3 in the Simulated Universe, which becomes accessible at Equilibrium Level 2. Reach World 3 in the Simulated Universe, and you will encounter Immersion Devices after beating Elite or Boss Domains. By spending 40 Trailblaze Power or one Immersifier, you can then unlock the Devices and acquire an Ornament. The Boss Domain gives you twice the chance of obtaining the Ornaments. Each World tier drops specific Planar Ornament sets, so you will need to farm the World that contains the set your build requires.

Simulated Universe is divided into different nodes call Worlds. Each World is a set of semi-randomized stages that ranges from combat stages to rest areas to random text event stages that culminates in a boss stage at the end of each World. At the start, you choose a Path tied to one of the Aeons—Destruction, Hunt, Erudition, Harmony, Nihility, Preservation, or Abundance. You clear a series of randomly generated domains, pick up Blessings tied to specific Paths, and fight your way to a boss at the end of each World. Lose at the boss and you restart the entire run.

Blessings are stackable buffs that define your run. The more you collect from your chosen Path, the stronger the synergy. Curios add another layer: collectible items with passive effects, some of which trigger powerful combos when paired with specific Blessings. Once you understand how Blessings stack and which domains to prioritize, runs become far more consistent. The randomness keeps every run fresh, but it also means the same team can steamroll one run and struggle the next, purely based on what Blessings the mode offers.

Your choice matters because Blessings stack—picking a Path that aligns with your team’s kit means every Blessing you collect feeds into the same win condition, turning a mediocre clear into a sweep.

HoYoverse has expanded the Simulated Universe with permanent modes that layer new mechanics onto the core structure. A game mode called the Simulated Universe: The Swarm Disaster has arrived in the Version 1.3 update of Honkai: Star Rail. This game mode can be unlocked after completing World 5. Swarm Disaster combines the typical Simulated Universe format with dice and a board game. Instead of choosing the domain types as they come, Swarm Disaster allows you to view the entire map before making any choices. The mode features Audience Dice that grant effects as you progress, and introduces the Path of Propagation.

Simulated Universe: Gold and Gears has arrived in the Version 1.6 update of Honkai: Star Rail. The update features new mechanics such as the Intra-Cognition System, Dice Faces, and more. This game mode can be unlocked after completing World 5. The Gold and Gears game mode features the new Path of Erudition. Similar to the Path of Propagation, it can be used in the regular Simulated Universe once unlocked. You’ll have to complete all chapters of Gold and Gears to unlock the Path of Erudition.

Divergent Universe is a game mode for Honkai: Star Rail’s Simulated Universe, released in the Version 2.3 update. The main difference this time is the addition of a Quick-Claim feature when trying to get Planar Ornaments. When completing Divergent Universe, you can save your progress within a Save File. Each Save File lasts for a week and allows you to re-challenge bosses directly and claim Planar Ornament Rewards. This solves the grind problem: instead of running a fresh 15-minute clear every time you want ornaments, you complete one run per week, then re-farm the boss directly. Simulated Universe: Unknowable Domain has been released in the Version 2.6 update of Honkai: Star Rail. The update features new mechanics such as the Scepters, Components, and more.

Why Full Runs Take Time—and Why Players Avoid It

A complete Simulated Universe run from start to boss can take 15 to 25 minutes depending on Path, Blessing RNG, and difficulty tier. That is the single biggest barrier for mid-game players. You cannot pause mid-run without losing progress, and if you wipe at the boss after 20 minutes, you restart from scratch. The Divergent Universe’s Quick-Claim system addresses this by letting you re-farm bosses weekly without repeating the full run, but the standard Simulated Universe and Swarm Disaster still demand the full commitment. If you are juggling Trailblaze Power across relic domains, levelling materials, and dailies, that time cost adds up fast.

Points are collected based on a player’s progress throughout the Simulated Universe. After accumulating a set amount of points, a player will receive a variety of rewards such as Credit, Stellar Jade, Lost Gold Fragments, Herta Bond, Star Rail Pass, and Tracks of Destiny. Whenever players complete a run of Simulated Universe or its various game modes, you will obtain a number of weekly Simulated Universe Points. These are used to obtain the recurring rewards from Simulated Universe. The points reset every Monday at 04:00:00 (server time). Higher difficulty tiers award more points per run, which lets you hit the weekly cap faster and claim the full Stellar Jade payout.

Immersion Devices and Trailblaze Power

When you explore Herta’s Universe, you will come across Immersion devices every time you enter an Elite combat domain or the final boss battle. After defeating all the enemies, players can interact with the immersion device they came across. Spend either 40 Trailblaze Power or one Immersifier to receive all Planar Ornaments shown on the screen. The stats they roll with are randomized, and each Simulated Universe world has two different Planar Ornament sets that players can farm for. Immersifiers drop from the weekly point rewards track, so you can farm a few ornaments per week without burning your entire Trailblaze Power budget.

Difficulty Tiers and Equilibrium Scaling

When a player’s Equilibrium Level increases, the player’s points tier will also increase. This increases the amount of rewards a player will receive. Higher difficulty tiers drop higher-rarity Planar Ornaments (five-star ornaments only become consistent at higher World difficulties), and they award more weekly points, letting you hit the Stellar Jade cap in fewer runs. If you can clear the higher tiers, you save time. If your roster cannot handle them yet, stick to lower difficulties—getting the ornaments at all matters more than farming five-star drops immediately.

Myth: You Have to Finish the Boss to Get Planar Ornaments

Players do not need to reach the final boss in order to claim immersion device rewards. Usually, there are one or two Elite encounters halfway through a run—beat these, claim the Planar Ornaments, then quit out of the Simulated Universe for more efficient farming. If you are only after ornaments and do not care about weekly points, this cuts your run time in half.

Myth: You Need Top-Tier Characters to Clear It

Path Blessings do the heavy lifting, not your roster. A mediocre team with synergistic Blessings will outperform a stacked team running the wrong Path. Pick Blessings that amplify what your team already does—break damage for break teams, follow-up buffs for follow-up attackers, DoT stacking for Nihility compositions. The mode is designed to let you scale underleveled rosters through smart Blessing choices.

Myth: All Paths Are Equal

Some Paths offer easier clears for specific team archetypes. Destruction and Hunt Blessings tend to accelerate damage output fastest, making them forgiving for players who want to speed through. Preservation and Abundance lean defensive, which helps undergeared teams survive but slows clear times. Erudition shines in multi-wave encounters but struggles against single-target bosses. Match your Path to the encounter and your team’s strengths, not the Path you like thematically.