Free-to-Play Anime Gacha RPG

Horny Waifu:
Kaiju Strike

Horny Waifu Kaiju Strike gameplay screenshot

Two Titans crash through the Star Gate onto Terion, a world torn apart by a cosmic Darkness and the Kaiju it unleashes. Recruit a roster of fierce, flirty heroines, forge your squad, and take the fight to the monsters threatening this shattered world.

Free to play · No credit card required · Play instantly in your browser
The World of Terion

A Cosmic War Needs a Hero

Horny Waifu: Kaiju Strike is a free-to-play anime gacha RPG. Twenty years ago, a lab accident unleashed the Darkness on Terion, a corrupting force that spawns monstrous Kaiju. Now the Titans Julius and Amber have arrived to turn the tide, and they need a squad of heroines bold enough to fight back.

Every heroine you recruit is a fighter first. Level her up, gear her out, and build your ultimate team across turn-based battles, guild raids, and PvP arenas. Grow closer with each waifu as you progress, and unlock exclusive character moments and bonus artwork along the way.

Whether you have five minutes or five hours, there's always another stage to clear, another hero to summon, and another Kaiju to take down. The Darkness isn't going to wait. Rally your heroines and give Terion the hero it needs.

Turn-based anime gacha RPG

34+ heroines to recruit

7 battle modes to master

Available on Mobile, Browser & Steam

Amber and Dalia in a story cutscene
Gameplay

Six Steps From Recruit to Kaiju-Slayer

Every system in the game, laid out one stage at a time.

01
The Story

Battle Through an Epic Story Campaign

Fight across dozens of chapters as Titans Julius and Amber uncover the truth behind the Darkness, one stage at a time.

  • Every chapter introduces new heroines to recruit
  • Light, self-aware banter balances the high stakes
  • Replay completed stages anytime to farm rewards
Campaign chapter map with unlockable story stages and rewards
02
Hero Summoning

Pull for Heroines From Common to Mythic

Spend gems on themed Summons to grow your roster, with rate-up banners spotlighting specific heroines.

  • Five rarity tiers, from Common to Mythic
  • Rate-up banners boost your odds on featured heroines
  • Collect shards to ascend heroines to higher stars
Summon banner featuring a fairy heroine
03
The Battlefield

Command Your Squad in Turn-Based Combat

Position five heroines across Front, Middle, and Rear, then time every skill to out-think the enemy line.

  • Fill the energy gauge to unleash Ultimate abilities
  • Race the clock before tough bosses enrage
  • Auto-battle and 2x speed for faster grinding
Turn-based battle against golem Kaiju
04
The Kaiju

Bring Down Terion's Most Fearsome Kaiju

Team up in Guild Raids to take on towering Kaiju bosses that no solo squad can handle alone.

  • Weekly rotating Kaiju, each with unique weak points
  • Raid difficulty scales with your combined squad power
  • Top-tier gear drops for every successful raid
Guild Raid boss fight against Kurumi with a full five-heroine squad
05
Hero Progression

Gear Up and Ascend Your Roster

Equip runes, upgrade gear, and ascend your heroines to push their stats past their starting limits.

  • Five rune slots per hero with set bonuses
  • Ascend heroes to unlock higher star ranks
  • Auto-assign recommends optimal rune builds
Mirina's hero profile with stats and training options
06
The Gallery

Collect Outfits, Portraits, and Bonus Scenes

Every heroine has outfits, portraits, and story scenes to unlock as she gears up and levels alongside you.

  • Every heroine has her own unlock path to complete
  • New pieces added with every content update
  • Seasonal and limited-time collectibles to chase
Gallery screen showing a heroine's profile and lockable image unlocks
Questions

Frequently Asked Questions

Yes. The full campaign, PvE modes, and PvP Arena are completely free. Optional purchases cover gems, cosmetics, and convenience, but nothing is required to enjoy the story or progress through the game.

Kaiju Strike is a turn-based anime gacha RPG. Recruit a roster of heroines, build your team, and battle through a story campaign against the Darkness and the Kaiju it unleashes.

Play for free right now at HornyWaifuKaijuStrike.com, no download required. The game is also available on Steam, and on mobile via APK (Android) or IPA (iOS), with full install instructions provided.

Yes. Link your account once and your roster, progress, and purchases sync automatically across mobile, browser, and Steam.

Battles are turn-based. Position five heroines across Front, Middle, and Rear, fill their energy gauge to trigger Ultimate abilities, and race the clock before tough bosses enrage. An auto-battle option is available for faster runs.

Summons use gems to pull heroines ranging from Common to Mythic rarity. Higher rarities are rarer, and rate-up banners spotlight specific heroines for a limited time.

Level up each heroine, equip gear and runes, and ascend her star rank as you collect duplicates. Deeper systems like rune set bonuses let you fine-tune her build over time.

Leveling up and upgrading a heroine's gear rewards you with exclusive character moments and bonus artwork in her Gallery, alongside her usual combat upgrades.

Yes. Join a guild for chat, Guild Raids against Kaiju bosses, and shared leaderboards, or test your team in the ranked PvP Arena and seasonal Tournaments.

The full story campaign and most progression can be played entirely solo. Guilds, raids, and PvP are optional modes you can jump into whenever you feel like teaming up or competing.

New heroines, story chapters, limited-time events, and Kaiju Raids ship on a regular schedule, roughly every few weeks.

Terion Needs You

Answer the Call, Hero

Your squad is waiting. Recruit your first heroines, build your team, and take the fight to the Kaiju today.

77% Positive Reviews on Steam (135 ratings)

Free on Mobile, Browser & Steam. No download, no credit card, just play.