Since we're talking about "Call of Duty" here, the Battle Royale mode is extremely on-brand.
That means you'll encounter the occasional zombie-infested area in Battle Royale, and respawns are handled in the same way they are in the previous "Call of Duty" Battle Royale mode.
And given that this is a Battle Royale mode, stuff like loot drops — packages of valuable loot that fall from the sky in specific locations — are very much part of the game mode.
Additionally, "Call of Duty Mobile" can be played in either first- or third-person mode, along the lines of "PUBG Mobile."
And finally, a system for automatically looting is part of "Call of Duty Mobile" (though you're able to swap out what you want as you wish). The same goes for opening doors — you'll automatically open them if you approach, so be careful if you're waiting to get the drop on an enemy.