No locks. No deadlocks. Just data flowing one way. Because of the Bleach Operator, every script runs in a sandboxed revision . You can change a function, recompile the script, and the running game will automatically migrate live variables to the new version—as long as they’re stable.
Zero GC spikes. This is a game-changer for fighting games, rhythm games, or any title requiring sub-millisecond frame consistency. 3. Native Entity Component System (ECS) Integration Peroxide isn’t general-purpose—it’s built for ECS. The language has first-class support for Archetypes and Queries .
channel "UI_Events" -> (event_type: string, payload: any) spawn fn update_health_bar() { loop { match recv("UI_Events", timeout=0) { ("damage_taken", val) => animate_red_flash(val) _ => skip } } } Peroxide Script
But as one modder put it on the forums: “Once you bleach, you never go back.” Author’s note: Peroxide Script is currently at version 0.9.2 (codename “Hydrogen Peroxide”). The 1.0 release is planned for Q4 2026.
// To commit the bleach back: enemy_health <-! preview // Stabilizes the change No locks
Developed by independent game studio (and later open-sourced in early 2025), Peroxide Script ( .ps or .h2o2 ) was designed to solve a specific pain point: safe, concurrent mutation of game state without garbage collection stutter.
But what makes it "peroxide"? The name hints at its core mechanism: . Let’s break it down. 1. The Bleach Operator: !> The headline feature of Peroxide is the Bleach Operator ( !> ). In traditional scripting, if you modify an object, all references see that change. In Peroxide, mutation is opt-in and temporary . Because of the Bleach Operator, every script runs
Is it the future of modding? Possibly for multiplayer, competitive, or simulation-heavy games. For a simple UI script? Probably overkill.
For two decades, modding has been a war between accessibility and power. Lua is friendly but slow. C++ is fast but unforgiving. Peroxide Script, a new open-source embedded scripting language, claims to offer the best of both worlds—with a chemical twist.
archetype Player { health: f32, position: Vec3, inventory: List<Item> } system "damage_over_time" { query (mut health, @tag "burning") for each { health.current -= 5.0 * delta_time } }