Studio555, a Stockholm and Helsinki-based tech startup, announced that it has raised €4 million (approximately $4.6 million) in a seed funding round. The round was co‑led by HOF Capital and Failup Ventures, with participation from industry veterans: Timo Soininen (Small Giant Games), Mikko Kodisoja (Supercell), and Riccardo Zacconi (King).
The investment will finance the development of a “playable app”, a game‑inspired platform that lets users design and personalize interior spaces without needing technical skills.
Founded in 2023 by CEO Joel Roos alongside former King executives Stina Larsson (CTO) and Axel Ullberger (CPO), Studio555 will leverage design and gaming experience to appeal to casual users.
At Studio555, we’re reimagining interior design as something anyone can explore: open-ended, playful, and personal. We’re building an experience we always wished existed: a space where creativity is hands-on, social, and free from rigid rules. This funding is a major step forward in setting an entirely new category for creative expression.”
Joel Roos – CEO of Studio555
“We know what it takes to build and scale for millions and millions of players. Now we’re applying that same solid engineering mindset – real-time tracking, live insights, and decisions backed by data – to deliver a high-performance creative platform that never compromises on speed or stability.”
Stina Larsson, Co-founder and CTO of Studio555
“We’ve brought together top talent from tech, gaming, and UX to reimagine the design experience from the ground up. We’re bringing the magic of gaming into a space that’s never truly felt playful before. Our goal is to fully reimagine what an app for interior lovers can be.”
Axel Ullberger, Co-founder and CPO of Studio555
The app aims to lower entry barriers to interior design with a visually immersive, no‑code interface targeted at both casual gamers and design enthusiasts
The studio plans to use the funding to accelerate product development, expand its 17‑person team in Stockholm and Helsinki, and prepare for a 2026 launch across Europe and the U.S. markets.
Studio555 brings together top-tier gaming talent and design vision. This team has built global hits before, and now they’re applying that experience to something completely fresh – think Pinterest in 3D meets TikTok, but for interiors. I’m honored to support Joel and this team with their rare mix of creativity, technical competence, and focus on execution.”
Timo Soininen – Co-Founder & Chairman at Small Giant Games
“I’ve always believed in investing in people first. I’m truly excited to be part of this new venture alongside a team I’ve worked with before and deeply respect and love.“
Riccardo Zacconi, Investor and Co-founder of King
