Listen to Sonic.exe game over by Shari Hughes in sonic.exe

Can somebody explain what Sonic.exe is? My 4 year old is obsessed with this (and regular Sonic), internet says it's a game, but it's also a series? : r/SonicTheHedgehog

Sonic.exe (Original Game)

pablothinghouse on X: oooohhh brother!!! those Sonic.EXE games

GAME OVER - Sonic.exe 2011 by ScorchVx on Newgrounds

GOD'S GAME OVER (RED VS Sonic.exe MU Escalation)

FNF VS OG SONIC.EXE?! free online game on

Not So Lazied Sonic.exe [Sonic the Hedgehog Forever] [Mods]

FNF vs SONIC EXE Game - Game for Mac, Windows (PC), Linux - WebCatalog

Sonic Nightmare (Sonic.exe) with Case - Sega Genesis US Seller

Sonic.EXE/Round 2, FearFic Wiki