World Fighters Simulator Update 1 Guide (April 2026)

World Fighters Simulator Update 1 brings the biggest changes the game has seen in a long time. The developers rolled out an entirely new zone, a completely replayable raid mode, fresh Mythic units to chase, and a stack of quality-of-life improvements that make grinding less of a headache. If you have been away from the game or you want to make sense of everything new, this guide breaks it all down in plain terms.

What Is World Fighters Simulator Update 1?

World Fighters Simulator Update 1 is the first major content drop that introduces the Tempest Federation zone. This new area opens up exploration, adds secret content, and kicks off the new Tempest Invasion raid mode that works for free-to-play players right from the start. The update also refreshes the gacha banners with powerful Mythic units, reworks the upgrade system, and tucks in a hidden rename buff that gives your units extra stats.

Tempest Federation Zone Explained

The Tempest Federation is a brand-new region that sits separate from the core map. Players can enter this zone once they hit the required progression checkpoint, and it functions as both a story area and an exploration zone filled with secrets. Scattered throughout Tempest Federation are hidden challenges, resource nodes, and a secret boss location that most players miss on their first run.

Finding the Secret Boss

The secret boss in Tempest Federation is tucked into a corner of the map that does not have an obvious entry point. Players need to look for a slightly different terrain texture near the northern edge of the zone. Jumping down a hidden ledge brings you to an arena where the secret boss waits. Defeating this boss rewards Demon Tokens and a significant amount of Crystals, making it worth the detour.

New Units and Gacha Banners

Update 1 introduces several new units across different rarity tiers, with the Mythic lineup getting the most attention. The Primordial Demon gacha banner is the highlight, featuring a boosted drop rate for the top-tier Mythic units that can completely change your raid performance.

Mythic Units Overview

Mythic units in World Fighters Simulator Update 1 come with unique passive abilities that trigger during specific raid scenarios. Rimuru, one of the highlighted Mythic pulls, provides a group heal mechanic that activates every 30 seconds during waves. Other Mythic units focus on damage amplification or crowd control effects that slow enemy advancement.

Which Banner to Pull From

For F2P players, the standard advice is to save your Crystals for the Primordial Demon banner when it rotates. The star banner offers better odds for Mythic units compared to the standard pool. If you get a duplicate Mythic, it converts into awakening materials that unlock new awakenings for your existing units.

Tempest Invasion Raid Mode

Tempest Invasion is the headline feature of World Fighters Simulator Update 1. This raid mode throws waves of enemies at you from all directions, and the goal is to survive as long as possible while racking up points. The mode is designed to be F2P-friendly, meaning you do not need the strongest Mythic units to get decent rewards.

How to Enter Tempest Invasion

You need Slime Keys to enter Tempest Invasion. The game hands out a few keys through daily login and progression milestones, so active players will always have a chance to play. Once you have a key, head to the Tempest Federation zone and interact with the raid portal near the center of the map.

Raid Mechanics and Waves

Each Tempest Invasion run consists of up to 100 waves. Enemies spawn in increasing numbers and tougher variants as you push deeper into the run. The first 20 waves are manageable with common units, but wave 40 onwards requires coordinated team setup or high-level Mythic units to survive. Your performance resets when you exit, so there is no permanent penalty for stopping early.

Raid Rewards

Rewards scale with your highest wave reached. Reaching wave 25 unlocks the first tier of exclusive loot, including Demon Tokens and upgrade materials. Pushing to wave 50 or higher gives you a chance at rare drops that include unit fragments for the newest Mythic characters.

How to Get Slime Keys?

Slime Keys are the entry currency for Tempest Invasion, and they come from several sources. Daily quests award one key per day for completing the objective. Achievement milestones grant keys in bulk when you hit specific wave counts in regular gameplay. The AFK grinding system also produces a trickle of keys overnight, so even passive players accumulate them over time.

If you are short on keys, focus on completing your daily quests first. They are the most reliable source and do not require spending Crystals.

Tempest Upgrades System

Tempest Upgrades replace the older upgrade path and give you more control over how your units improve. Each unit can receive upgrades that boost their base stats, with the strongest upgrades requiring materials earned from Tempest Invasion. The system lets you prioritize units you use frequently rather than spreading resources thin.

Upgrade Priority for F2P Players

If you are working with limited resources, focus your Tempest Upgrades on your primary damage dealer first. Once your main unit is at a comfortable level, spread remaining materials to your support units. The diminishing returns on upgrades mean putting everything into one unit is smarter than dividing resources evenly.

The Rename Buff Mechanic

One of the sneakiest additions in World Fighters Simulator Update 1 is the rename buff system. If you rename a unit to a specific keyword, the game grants a small passive stat boost that stacks with your unit’s base stats. This is not explained in the tutorial, which is why many players miss it.

The buff works by checking your unit’s name against a list of recognized keywords. Renaming a unit to certain terms triggers a hidden multiplier. Experimenting with different names can reveal new bonuses, and the community is still discovering new keyword combinations that work.

Quality of Life Changes

Update 1 addresses several long-standing complaints from the player base. The AFK grinding system now functions more reliably, capturing progress even when the game runs in the background. The inventory UI has been redesigned to make sorting units and items faster, and there is a new auto-roll feature for the gacha that lets you set a budget and walk away.

New Awakenings

The new awakening system lets Mythic units reach an additional evolution stage using duplicate pulls or special awakening materials. Each awakening tier adds a new visual effect and improves the unit’s base stats by a fixed percentage. The stat boost from awakening applies before Tempest Upgrades, making it a multiplicative bonus.

Mount Dash Added

A new mount dash ability lets you move across the map faster during exploration. Activating the dash consumes stamina but covers roughly three times the normal running distance. This is especially useful in Tempest Federation where the zone is larger than the base game maps.

F2P Progression Tips for Update 1

Free-to-play players have more options than ever in World Fighters Simulator Update 1. The key is to focus your early efforts on building a solid foundation before chasing Mythic units.

Start by completing your daily quests and accumulating Slime Keys. Every Tempest Invasion run you complete brings you closer to upgrade materials and currency. Save your Crystals for the Primordial Demon banner and only pull when the Mythic rate is boosted.

AFK grinding is your friend. Even when you are not playing actively, the updated AFK system captures progress in the background. Check in every few hours to collect resources and keep your AFK session running.

Join community discussions to share findings about the rename buff keywords and secret boss strategies. The community on Reddit and Discord is actively mapping out hidden mechanics that the game does not explain directly.

Frequently Asked Questions

Final Thoughts on World Fighters Simulator Update 1

World Fighters Simulator Update 1 delivers on its promise of meaningful content for both new and returning players. The Tempest Federation zone adds exploration depth, Tempest Invasion gives F2P players a reliable progression path, and the hidden rename buff gives theorycrafters something to chase. If you have been putting off jumping back in, now is the time to give the update a shot.

Focus on building your Slime Key reserves, pull smart on the Primordial Demon banner, and keep an eye on community discoveries for the rename buff keywords. The grind is lighter than before, and the rewards are more accessible than ever.