Oldschool RO (OSRO) is a Pre-Renewal Ragnarok Online private server running on the latest Hercules emulator, offering a nostalgic journey back to Episode 13.2 of Rune Midgard. The server is designed for players who crave the golden era of classic Ragnarok Online, combining high-rate progression with an extensive suite of custom content and features. OSRO hosts multiple rate tiers — including a 3,000x/3,000x experience flagship server and a 150x/150x Mid-Rate variant — letting players choose their preferred pace. The server is hosted on dedicated hardware in Tokyo, Japan with DDoS protection and Gepard Shield 3.0 anti-cheat. With a peak of 2,502 players and regular player counts around 600+, OSRO is one of the larger Pre-Renewal communities actively running today. Founded in November 2021, it has grown a passionate multilingual community supported by active game masters and robust Wiki documentation.

Version/Expansion: Pre-Renewal — Episode 13.2
Rates: 3,000x EXP / 3,000x Job / 20% Drop (High Rate); 150x / 150x (Mid Rate)
Type: Pre-Renewal PvP with War of Emperium

High-Rate Pre-Renewal Gameplay: Max level 255/100 with a 255 stat cap and ASPD cap of 196, preserving classic balance while enabling fast progression.
War of Emperium: Weekly guild warfare events where guilds compete to conquer castles and hold territory — the cornerstone of competitive OSRO play.
Extensive Custom Content: Custom items, NPCs, quests, and StoryLine Quests that extend the classic RO narrative with original content.
Battlegrounds & PvE Events: Automated battleground matches alongside PvE-focused events, daily automated events, and monthly tournaments.
Mobile Client Support: Fully supports Android mobile access, allowing players to participate in events and grind on the go.
Anti-Cheat & Security: Gepard Shield 3.0 with ADelays System provides robust protection against bots and cheats, keeping the economy fair.

OSRO has a peak concurrent player count of 2,502 and maintains a consistently active population around 600+. The Discord community serves as the main hub for announcements, event scheduling, and support. English is the primary server language, and the staff is well-regarded for accessibility and responsiveness.