Enter
Winter, 1962. A research installation deep beneath Eastern Europe goes silent.
The record ends there. The rest, you'll have to find for yourself.
The Echo Engine runs on technology developed entirely in-house: a custom C++ engine written from the ground up for physics-first horror. Real-time dynamic lighting, a full rigid-body simulation at the core of every interaction, and levels authored in an industry-standard brush workflow.
A multiplayer co-op modification for Frictional Games' Penumbra: Overture, built directly on the HPL1 engine. Two players. One nightmare. Surviving the mine was never meant to be done together — until now. Out now: grab a friend and play the campaign in shared-physics co-op.
████████ ████ ██████ ███ ███████. Not yet.
Quasi Interactive was founded by Nicolas Balkhausen — a passionate gamer and creative who has dreamed of making video games for as long as he can remember.
It started at age five playing Ocarina of Time for the very first time and before he knew. A beautiful world carefully curated by the team at Nintendo opened his eyes — and before he knew a love for games that never faded. Years later, discovering Cave Story by Pixel proved that one person with enough vision could build something extraordinary. That revelation became a mission.
Games like SOMA and Dark Souls shaped what that mission looks like. Both prove that atmosphere and environment do the heaviest lifting — a place that feels real, oppressive, and alive is scarier than any cheap jump scare will ever be. That's the kind of horror Quasi Interactive builds toward.
A studio built on the belief that great things come from people who care deeply — about the craft, about the player, about every detail that separates a good game from one you never forget.