Fornite

Epic Games' Fortnite is the game that turned "build fighting" into a genre-defining mechanic, instant walls and ramps thrown up mid-firefight for cover and high ground, layered on top of a standard 100-player shrinking-zone battle royale.

Because building can win a gunfight outright, editing a wall into a window the instant you take fire tends to save more engagements than trying to out-aim an opponent from open ground. Landing in a quieter part of the map to gear up fully before the zone forces a fight generally beats a contested hot-drop, since a full loadout matters more in the mid-game than a slight head start on loot timing. 1v1.LOL strips the same build-and-battle formula down to fast, focused duels if a full 100-player match is more than you want right now.