Catalyst
Over 15 years of RuneScape private server experience went into Catalyst, a polished custom OSRS build. Weapons and armour are unique to the server rather than lifted from OSRS, and custom bosses carry the PvM side. Progression is made to pay out the hours put in, so the grind keeps handing back upgrades.
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TL;DR
CATALYST — THE BEST CUSTOM RSPS OF 2026 - Built with over 15 years of RuneScape private server experience, Catalyst delivers a polished custom OSRS adventure filled with unique weapons, armour, bosses and rewarding progression.
CATALYST — THE BEST CUSTOM RSPS OF 2026
Built with over 15 years of RuneScape private server experience, Catalyst delivers a polished custom OSRS adventure filled with unique weapons, armour, bosses and rewarding progression.
Enjoy exciting PvM, powerful upgrades, regular events, quality-of-life features and an active community supported by an experienced team.
Start your journey. Become the Catalyst.