Asking whether multiplayer works without leveling is like asking whether eating food works without a fork. Of course it does, but the fork makes certain things easier. Like the fork, in the end, leveling mechanics are just tools.
If used properly, they can add a lot of value to the game. They can give players goals to aim for, and can help drive home the concepts of a player improving themselves. Leveling also invests a player in their character, making them less likely to drop the game for something else at the drop of a hat.
That being said, leveling also bring negatives to a game. It increases the gap between new players and vets, since a level 1 player probably can't even harm the player that is level 9001. This can be discouraging for new players. In some games, like CoD, this also limits a player's options and prevents them from playing how they want to play until they have invested a fair amount of time into the game.
No game inherently NEEDS leveling to succeed, it is just a design tool. There are plenty of games that implement leveling well, and are successful for it (Borderlands is my favorite example), but there are also plenty of games that are successful despite no leveling whatsoever.
If used properly, they can add a lot of value to the game. They can give players goals to aim for, and can help drive home the concepts of a player improving themselves. Leveling also invests a player in their character, making them less likely to drop the game for something else at the drop of a hat.
That being said, leveling also bring negatives to a game. It increases the gap between new players and vets, since a level 1 player probably can't even harm the player that is level 9001. This can be discouraging for new players. In some games, like CoD, this also limits a player's options and prevents them from playing how they want to play until they have invested a fair amount of time into the game.
No game inherently NEEDS leveling to succeed, it is just a design tool. There are plenty of games that implement leveling well, and are successful for it (Borderlands is my favorite example), but there are also plenty of games that are successful despite no leveling whatsoever.