OldSchool RSPS Review - 1:1 Raids Meets Semi-Custom in 2026
OldSchool RSPS, or OSPS to its players, calls itself the ultimate semi-custom experience. Faithful 1:1 endgame PvM with an original progression layer on top. Free to play, with a large Discord community behind it.
Key Features #
1:1 Raids, Yama, Doom and the Fortis Colosseum. Seven Ironman modes plus the unique Yin-Yang mode. A custom Discovery skill you won’t find in OSRS. Over 100 Sacrifice Perks to shape your account, with Pet Perks recently released. Combat Achievements, and PvP tournaments on top.
The Semi-Custom Layer #
The Discovery skill and Sacrifice Perk system set OSPS apart. Instead of pure 1:1 grinding, you feed progress into perks that stack up over time. The account-building arc feels closer to a league season, except it’s permanent.
Progression #
Hand-crafted content paced for free players. The perk systems accelerate mid-game naturally, and endgame PvM difficulty stays honest because the encounters are 1:1. Ironman variety is a highlight: seven modes means there’s a self-found ruleset for everyone.
Who It’s For #
OSRS players who want faithful raids but are tired of pure 1:1 pacing. Perk-system fans. Ironman enjoyers spoiled for choice. If you want zero custom content, a strict 1:1 server fits better; if you want customs everywhere, look at the full-custom category instead.
Quick Verdict #
| Strength | Detail |
|---|---|
| Endgame | 1:1 raids, Yama, Doom, Colosseum |
| Identity | Discovery skill, 100+ Sacrifice Perks |
| Ironman | 7 modes + Yin-Yang |
| Extras | Pet Perks, Combat Achievements, PvP tournaments |
Frequently Asked Questions
- The endgame PvM is. Raids, Yama, Doom and the Colosseum are built 1:1. On top of that sits semi-custom progression: a custom Discovery skill, 100+ Sacrifice Perks, Pet Perks and Yin-Yang mode. It plays like OSRS with an extra layer.
- Seven Ironman modes plus the unique Yin-Yang mode. Combat Achievements and Collection Log progression carry across, and PvP tournaments run on a schedule.