Sonic EXE - Play Sonic EXE On Wordle Website

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

Sonic.exe (Original Game)

Sonic Exe

G8ME 0V3R, The Sonic Exe Wiki

Sonic.exe (2012)

This Time WE PLAY AS SONIC.EXE!!!

Sonic.exe - Loathsome Characters Wiki

Sonic.EXE: The Assault – Episode 1 Playable Preview - The

FNF - My Custom Sonic.EXE Game Over Screen by Abbysek on DeviantArt