Engineering immersive VRChat experiences through advanced systems, intelligent interactions, and relentless attention to detail.
A dystopian survival experience set in the remnants of a fallen research facility. Built with advanced AI, immersive systems, and a deep atmospheric focus.
View Project →Complex 0 was an atmospheric VRChat Backrooms experience focused on exploration, environmental storytelling, and large-scale liminal architecture. Its lobby drew architectural inspiration from the concrete forms, open gathering spaces, and connected corridors of the University of Toronto Scarborough.
Level 0 combined maze-like yellow rooms, environmental audio, scripted interactions, and carefully placed visual details. Several areas also included subtle easter eggs referencing the visual language of Kane Pixels’ Backrooms while remaining part of Complex 0’s own layout and narrative.
The project served as a foundation for later Complex Interactive work, combining world design, Udon systems, optimization, interactable environments, progression, atmosphere, and multiplayer-ready exploration.
Watch on YouTube →Exclusive assets and tools for your VRChat worlds.
Browse Jinxxy →Currently uncommissioned.
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Visit Patreon →“I commissioned a networked interaction system with synced doors, access permissions, and event triggers. Kodai explained every limitation clearly, delivered a clean setup, and showed me how to expand it later.”
★★★★★“Our world had severe performance problems in populated instances. Kodai reduced expensive update loops, reorganized several scripts, and identified world bottlenecks. The improvement was immediately noticeable.”
★★★★★“I asked for a health, sanity, and damage framework for a horror project. The finished system was modular, easy to tune, and matched the atmosphere instead of feeling like a generic asset.”
★★★★★“The inventory commission included item conditions, containers, pickup behavior, and multiplayer synchronization. One edge case appeared after delivery, but Kodai replied quickly and fixed it within 24 hours.”
★★★★☆“Kodai built an enemy AI prototype with patrol, detection, pursuit, and reset states. Communication stayed active throughout development, and every behavior was demonstrated before delivery.”
★★★★★“We needed a compact HUD for objectives and player status—not a full UI package. A scaling issue appeared during testing, and Kodai replied quickly and patched it the same day.”
★★★★☆
Kodai is the lead developer of Complex Interactive, responsible for the complex scripting, programming, and technical systems used throughout its worlds. He also contributes systems work to Sable’s Backrooms VRC Series.
With more than eight years of Unity experience and several years working in C#, Python, and UdonSharp, Kodai specializes in translating ambitious game concepts into functional VRChat systems. His work includes artificial intelligence, NPC behavior, state-driven gameplay, multiplayer interactions, player statistics, survival mechanics, inventories, objectives, debugging, and performance optimization.
Kodai’s strongest specialty is highly complex AI and NPC development inside VRChat. He approaches these systems as complete gameplay frameworks—combining perception, decision states, pursuit, combat, synchronization, environmental responses, and reliable recovery behavior—rather than isolated scripted effects.
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