I am not a big fan of GTA games, mostly due to the fact that they very often introduce new mechanics into the system for a single mission and then take them away for the rest of the game. As a result you can't have the same fun in the freeroam.
Think of the mission at the start of GTAV where you sneak into Michael's home as Franklin. You don't really have some stealth system to master like in Splinter Cell. Your succeed by figuring out how the designers programmed the encounter. Don't go into any other rooms, wait a little until the characters finish talking and go where the minimap shows you. You haven't accumulated any knowledge on how to break into other homes because it's not possible in the game's world, you haven't learned how to use sneaking because the AI in the open-world is not designed around that. You just played through a heavily scripted interactive cutscene.
There are many more examples: like how you use the ability to pick up and throw items in one of the GTA4 missions to break a shop window to persuade a clerk to pay up. You can't use that as a mechanic to extort money from other shops in the city, it was strictly for this mission. You might as well never pick up any such items later on in the game because it's useless to do so.
So basically I don't like gimmick mechanics that come and go. This is why I have a certain admiration for Ubisoft games and their systemic design but these games have other problems of their own.
Bully is different. Sure it has some degree of that in some of its missions, but a lot of the design choices really benefit the game and the free-roam fun it offers. The reason is simple: the game's goal is to replicate the experience of being a teenage troublemaker. So you can start a food fight at the school cafeteria any time you want and you can play pranks on people, start a snowball fight, sneak into the girl dorm or pull a fire alarm to cause chaos during classes. And all that while being in the open world with no constraints.
It might sound like nothing, but really Bully allows the player to have much more control over the game world, something GTA games offered very little of. Couple that with a more lenient wanted system that allows you to get away with pretty much any mischief. It's all about having fun.
As for other elements of the game, the Story is brilliant. Being T-rated benefits this game greatly, since it can't rely on swearing or sex jokes. Much like every voiced GTA character, the protagonist is witty, honest and generally acts as a straight man surrounded by Houser's walking stereotypes: ridiculously ugly nerds, imbecilic bullies, insufferably stuck-up preps, roided jocks and pretentious greasers. And the school staff is no better: sex-pests, drunks and creeps. Hilarity ensues.
I appreciate that pretty much every GTA character is clearly shown as a psychopath. Be it GTA4 where Nico is openly talking about his "sins", GTA5 protagonists who seem to be very self-aware, and of course Tommy Vercetti of the Vice City fame, obvious nod to the craziest gangster of all - Scarface.
Jimmy is no different, jumping from one clique to the next like a mercenary he causes thousands of dollars worth of property damages and hospital bills. It's handled pretty well, you're no goody two-shoes but everybody else is so horrible that it doesn't seem like you're doing anything wrong.
Bully is jam-packed with activities besides the story missions. Go-kart and bike racing, boxing, classes (some surprisingly fun ones), carnival games, errands that other characters ask you to run, jobs in case you're short on cash and the obligatory collectathon. The smaller scale of the world results in a somewhat more detailed and tightly designed experience. It doesn't overbear you with its scale and opens up gradually, as the story progresses. 100%-ing the game did not feel like a chore, quite rewarding actually. Classes give you unique abilities and bonuses while races, errands and jobs add variety.
It's a Rockstar classic, along with Manhunt and the 3D GTA games. Released during an era of games that shipped complete and full, no DLCs, season passes, monetization, etc.
It's probably going to remain to be a unique and unmatched ruffian simulator. All the more reason to play it, I say.