Undertale Fan Game —— Sans Fight Hardmode by CYF-TeamWork by Loris_Offical - Game Jolt

UNDERTALE Hard Mode: Sans Battle (fanmade genocide battle) by Vecc - Game Jolt

Newest Undertale Games - Game Jolt

Top Fighting games tagged Undertale

Best Undertale Games - Game Jolt

UNDERTALE Hard Mode: Sans Battle (fanmade genocide battle) by Vecc - Game Jolt

UnderTale Hard Mode Sans Battle INF HP by N-Nico - Game Jolt

UNDERTALE: SANS AND PAPYRUS GENOCIDE BATTLE [RECREATION] by Team Darkness Krzysiu #Dead Man Walking - Game Jolt

Best Undertale Games - Game Jolt

Undertale HARD MODE Sans fight my take by SEEKER_III - Game Jolt

Are there any fangames that let you fight as sans? : r/Undertale