weltenbauer.

weltenbauer. is an independent German game-development and real-time 3D simulation studio based in Wiesbaden, Hessen. Formed in 2008 as weltenbauer. Software Entwicklung GmbH, it grew from the custom software and games-development work of the original weltenbauer. business, which Robert Mayer established in 2003.

The studio develops interactive software for both entertainment and industry, combining game-production experience with technical simulation, visualization and training systems. Its work spans PC, console, mobile, virtual reality and augmented reality projects, with capabilities including Unreal Engine 5, Unity, physics modelling, procedural workflows and multi-platform engineering.

Simulation games

weltenbauer. is known for the Construction Simulator series, developed with publisher astragon Entertainment. The franchise centres on detailed construction and heavy-machinery operations, incorporating vehicle physics, licensed equipment and cooperative multiplayer across multiple platforms. The studio's game portfolio also includes Firefighting Simulator: Ignite.

Industrial and training software

Alongside consumer games, the studio builds real-time 3D applications for industrial planning, machine visualisation and professional training. Its work includes digital-twin and simulation projects for crane operations, heavy lifting, robotics and emergency-response scenarios.

Supported areas of work include:

• Full-cycle game conceptualisation, engineering and live-operations support
• Custom real-time 3D software engineering for industrial clients
• VR and AR interactive training solutions
• Product configuration, planning and machine visualisation
• Ports for PC, current-generation consoles and mobile platforms

The company operates with games and industry leadership under co-managing directors René Nold and Christian Rathemacher. It maintains a hybrid and remote working model while bringing teams together in Wiesbaden for planning and workshops.

weltenbauer. remains management-controlled. astragon Entertainment GmbH is a long-term publishing partner and holds a 25% minority shareholding, rather than operating the studio as a wholly owned subsidiary.