Rumbleverse

Rumbleverse is a free-to-play, 40-player Brawler Royale set in Grapital City. Built around large-scale multiplayer sessions, matchmaking, and in-game purchases, the title required stable backend services to support concurrent player activity.

For Iron Galaxy Studios and Epic Games Publishing, launch readiness meant validating:

• Authentication and registration flows
• Game matchmaking services
• In-game store transactions
• Backend gameplay service stability

With multiple players entering matches simultaneously and performing real-time actions, backend bottlenecks or degraded performance could disrupt the competitive experience.

A structured load testing engagement was required to simulate real-world concurrency before launch.

Cyrex conducted comprehensive load testing across Rumbleverse’s backend and gameplay infrastructure.

During the engagement, over 10,000 virtual players were simulated performing legitimate in-game actions. Rather than synthetic API-only testing, simulated users followed realistic gameplay flows to reflect production conditions.

The load testing scope included:

• Authentication and registration processes
• Game matchmaking services
• In-game store purchase flows

By replicating user behavior at scale, Cyrex evaluated how services responded under sustained concurrency and identified where degradation occurred.

Through iterative testing and collaboration with the development team, Cyrex:

• Identified performance limitations
• Detected scalability bottlenecks
• Provided data-driven feedback to guide optimization

This allowed the team to address infrastructure weaknesses before they could impact live players.