What OpenRGS is
OpenRGS is the proprietary remote game server developed by Hacksaw Gaming and used to deliver every slot in the studio’s catalogue to operator websites. The platform handles game logic, random number generation, session management, and reporting across more than 3,000 operator brands worldwide. Every Hacksaw release – from Wanted Dead or a Wild back in 2021 to Power of Ten in April 2026 – runs on this same infrastructure.
The “Open” in the name refers to the platform’s third-party developer access. External studios can build games for OpenRGS rather than running their own server stack, which means content from partner studios shows up on the same RGS that powers Hacksaw’s own titles. Operators integrating OpenRGS therefore gain access to a content library larger than Hacksaw’s first-party catalogue.
Certification and oversight
OpenRGS is licensed and regulated in Great Britain by the Gambling Commission under account number 54059, held by HGMT Ltd. The same operator licence covers the Maltese MGA authorisation under licence number MGA/CRP/501/2018, issued in December 2018. Both licences sit under HGMT Ltd, the Hacksaw entity registered in Malta.
Independent testing comes from eCOGRA, which audits the random number generator and verifies published RTP figures against actual game performance. Certification reports are issued annually. Additional regulatory coverage extends to Spelinspektionen in Sweden, the Hellenic Gaming Commission in Greece, and the Isle of Man Gambling Supervision Commission, with the IOM Software Supply Licence valid through 3 January 2027.
How games connect to it
Operators do not host Hacksaw slot files on their own servers. Instead, the casino’s website embeds an iframe that calls directly into the OpenRGS infrastructure each time a player loads a game. Spin requests, bet validations, and outcome calls all route through the central platform, with results returned to the player’s screen typically within 200 to 400 milliseconds.
Two consequences follow from this model. First, game updates roll out instantly to every operator at the same time – there is no per-casino patching cycle. Second, no Hacksaw slot can be tampered with at the casino level, because the casino never holds the game’s source code or maths model in the first place.
Third-party developers on the platform
Several independent studios distribute their games through OpenRGS rather than building proprietary infrastructure. Sticky Slot Studios, Pulley Studios, and a handful of smaller developers have launched titles via the platform since 2023. From a player’s perspective, these games appear in the casino lobby alongside Hacksaw releases and run with the same UI, audio standards, and session controls.
For UK casinos, every game delivered through OpenRGS – whether built by Hacksaw or a partner studio – falls under the same UKGC account number 54059. This means regulatory compliance, RTP verification, and dispute handling all flow through a single licensed entity rather than fragmenting across multiple supplier relationships.
What this means for game data
Every figure published on hacksawgaming.uk – RTP percentages, volatility ratings, max win caps, hit frequencies, feature buy probabilities – comes from data generated by OpenRGS itself. Hacksaw publishes mathematical specifications for each release based on simulated rounds (typically 10 billion per slot), and those specifications are what get cited in slot reviews on this site.
When figures vary across different casino implementations, the variation always traces back to which RTP tier the operator licensed from OpenRGS, not to differences in the main engine.
