Modern Day is the 22nd world in Plants vs. Zombies 2. It is set in the present, more precisely a few moments before Crazy Dave eats his taco (and further begins his time travel journey), and features Dr. Zomboss trying to negate and alter history. The lawn is the same as the Player's House and the music is a combination of themes from the first game with instruments from every world. This world is a mash-up of every time period encountered before, the main environment modifier, portals, reflect that. Portals summon special zombies from any time period to the lawn. The tiles where portals appear and the zombies summoned are scripted and never change. The gimmicks from some other worlds are also present, elevating the challenge to the point of being the second world with a five Jalapeno difficulty rating. Since the player can encounter zombies from every previous world in this world, it can be a good option to complete multiple tasks at the same time from Travel Log that involves killing certain zombies.
The Zombies that you can see in this world (My Take): (Zombies from Player's House) Ducky Tube Zombie Conehead Ducky Tube Buckethead Ducky Tube Headwear Helmet Ducky Tube Brickhead Ducky Tube Balloon Zombie Newspaper Zombie All-Star Zombie Super-Fan Imp Catapult Zombie Zomboni Zombie Bobsled Team Raincoat Zombie Digger Zombie Riot Police Zombie Solar Car Zombie Jack-in-the-Box Zombie Bungee Zombie Screen Door Zombie Dancing Zombie Backup Dancer Dolphin Rider Zombie Pogo Zombie Ladder Zombie (Modern Day Zomboss, and All Worlds Bosses)