Maddison was 4-0 up at half-time on EA SPORTS FIFA 20 thanks to a Kelechi Iheanacho hat-trick and an emphatic finish from his own in-game character.
Iheanacho netted his fourth after the break before Maddison added his second to score Leicester's sixth.
Maddison and Wilson were both born in Coventry and the former was delighted to have secured bragging rights between the pair.
"I love Callum, he’s like my big brother," he said. "But there’s only one king of Coventry!”
James Maddison (LEI) 8-1 Callum Wilson (BOU)
Max Aarons (NOR) 4-1 Ryan Sessegnon (TOT) | Report and highlights
Phil Foden (MCI) 3-4 Charlie Taylor (BUR) | Report and highlights
John Egan (SHU) 4-3 Jofra Archer (MUN) | Report and highlights
James Maddison (LEI) 3-2 Max Meyer (CRY) | Report and highlights
Finals Day will also be shown live in the UK on Sky Sports' Premier League and Main Event channels, with the tournament again being televised around the world by the Premier League's international broadcast partners.
The tournament will urge everyone to follow official advice by staying at home and saving lives.
We would also ask anyone inspired to play FIFA 20 to take regular breaks from gaming, every 45 minutes.