A custom osu! ruleset with unique mods and local PP tracking.

• Miss Challenge — fail if your miss count exceeds a configurable limit (1–100). Option to auto-set from your best local score for the beatmap, matching by active mods (DT rate, AR/CS).
• No Sliding — disables sliding on sliders
• Random V2 — randomizes hit object positions with configurable patterns
• Spacing Adjust — adjust approach rate and circle size with extended limits

• Local PP — calculates and tracks performance points locally
• Skip breaks — button to skip break sections
• ModRandomV2 — randomizes hit object positions with configurable patterns
• Merged mods — includes NoSliding and SpacingAdjust
• Mod preset import/export — share presets via JSON files
• Collection import/export — back up and share beatmap collections
• Chat mod sharing — right-click a chat line to send current mods, right-click a message to apply them
• Local user profile with performance graphs and ranked scores

1. Navigate to osu!lazer's data directory: Settings → General → Open osu! folder
2. Copy osu.Game.Rulesets.MOsu.dll into the rulesets folder
3. Restart osu!lazer

Get the latest .dll from the Releases page.

dotnet build osu.Game.Rulesets.MOsu/osu.Game.Rulesets.MOsu.csproj -c Release

Requires .NET 8.0 SDK.