ArtStation - Sonic.exe and his friends art

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

Hyper sonic exe pixel art

Sonic Exe Coloring Pages Printable for Free Download

Sonic.EXE (Upgraded) by on

Sonic.EXE, Villains Fanon Wiki

Sonic.EXE (You Can't Run) Render #2 by KingAngryDrake on DeviantArt

KaiMusicRap - Sonic Exe Vs. MikeCrack Exe Rap: listen with lyrics

Sonic Exe – Song by The Virtual Realm – Apple Music

THE ORIGINAL SONIC.EXE (2011) ACTUALLY GOT AN UPDATE!! [NEW ENDING] (2023)

Fleetway Super Sonic insults the other Vs. Sonic.exe 3.0 newcomers. : r/FridayNightFunkin