Tunisia goalkeeper Mouez Hassen had certainly not imagined the busy start he would endure, as he had to stretch himself to pull out a downward header from Kane following a corner in the opening minutes.
The Three Lions made their mounting pressure bear fruit as Kane was in the right position to tap home from close range for his first World Cup goal after Hassen had stopped Harry Maguire’s initial header.
Tunisia’s situation got worse when Hassen was unable to continue due to injury, prompting an early substitution, with Farouk Ben Mustapha taking his place in goal on 15 minutes.
Completely out of nowhere, the Carthage Eagles were awarded a penalty after a foul by Kyle Walker. Ferjani Sassi lined up against Jordan Pickford and came out on top.
The English looked to find an instant response when Alli flicked on a header into the box, but clearances from the Tunisians saw their chance go a begging.
As halftime drew closer, Lingard beat the offside trap and threatened a goal after a long ball from Walker but his deft touch following an on-rushing Mustapha found the post.
England were struggling for any fruitful openings after the break as the North Africans held a very firm, high defensive line.
However, Gareth Southgate's men finally broke Tunisian hearts as Kane headed home unmarked at the far post in added time.
Next up for England is a date with Panama on Sunday, while Tunisia take on a red-hot Belgium in Moscow the day before.