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Drag to set gates; the colored chip sets each uma's team
What is this?
A simulation of the umamusume race engine (or at least that's the aim). Every uma is simulated, then played back on the top-down track. The default is the 9-uma Champions Meeting format.
What about accuracy?
The engine is based on community research and network packet analysis, not the game's code. Treat its results as informed estimates, not exact outcomes. If you find a mistake, please contact me on Discord (nostux).
Times and margins
Positions, skill activations and pace are modeled. Finish times and margins are reconstructed because the game calculates them client-side, so they may differ slightly.
Skills
Green skills count from the start if they meet the conditions. Gold and unique skills stand out. A few skills that aren't implemented yet may not activate here.
Mechanics
Position keep, kakari, stamina shoubu, oikurabe, spot struggle, position compete, secure lead, stamina keep, conserve power, zenkai spurt, blocking and debuffs are modeled. Some rely on incomplete public information and remain approximate.
Mobs and strength
Empty gates are filled with mob umas: stats capped at 1000, aptitudes set to A for the race, and running-style skills based on real mobs (a close approximation, not an exact copy). The Mob strength slider scales how strong they are.
Known caveats
Some special mechanics remain approximate. Oikurabe pairing and Zenkai Spurt may differ from the game. Conserve Power duration is estimated and capped at 5 seconds. Stamina Keep matches captured races overall, but accuracy varies by course. Secure Lead is still under investigation.
Load replay
Loads a captured in-game race instead of running a simulation. Replays use a specific file format described beside the load button. Positions and skill timings come directly from captured data, though some display details may differ.
Translations
The Japanese is translated with AI and may not be perfect. I apologize for any mistakes, and I am happy to fix them if you spot any.
Data
JP server only. This is an unofficial fan project and is not affiliated with Cygames.