404RODEV is a service provider specializing in end-to-end development and setup for Ragnarok Online servers built on rAthena. The brand helps customers turn server concepts into launch-ready projects, offering individual services or coordinated support from initial planning through deployment. Its offerings include hosting and server environment setup, rAthena installation and configuration, and website design and development. Technical work can cover server compilation, NPC and item scripts, skills, databases, bug fixes, and gameplay balance. Website services include responsive pages, registration and login, OTP, top-up functions, member panels, and administration dashboards.

404RODEV supports Episode 1.0, 4.0, and 5.0, as well as Hi Class and custom or Modern Classic approaches. Project development can bring together the server, client, website, game systems, and payment features. Its process includes gathering requirements, planning the architecture, developing and testing systems, and deploying them for launch. The brand also highlights security basics, backups, future expansion, and post-delivery support and maintenance according to agreed package terms.