Before we get into this, I have a disclaimer. These are my opinions on games that I consider overrated, so please don't blow a gasket.
Like any form of entertainment, there are games that people are very excited for and enjoy. You give it a shot and you don't think of it as highly as others to where you might consider it overrated. Here is games that I consider overrated beginning with this.
Super Mario World (SNES, 1991): Mario saw a good jump from the original Super Mario Bros. to the third one on NES. With the Super Nintendo on its way, it seemed wise to have the plumber on the new 16-bit machine. Obviously, he didn't disappoint many, but other than a few things like battery backup saves and introducing Yoshi, Super Mario World does not impress me. It's Mario 3 with 16-bit paint splashed over it. I was more impressed with Sonic the Hedgehog's graphics than this one. The soundtrack is mostly forgettable. To me, it didn't add much. Even with the secrets, the levels and new powerups didn't impress me. If you're looking for a Mario game to play on SNES, play Yoshi's Island.
Donkey Kong Country (SNES, 1994): I think people are realizing this game is style over substance over the years. That's the first DK Country in a nutshell. It looks great, but the gameplay is boring. Sure, the secrets keep it from being very stale, but it's left to right, reach the exit, and you're done. That's not exciting. Add in a soundtrack that is okay, and it's another forgettable overrated game. Play the second one. It feels a lot more refreshing and doesn't get stale very quickly.
The Simpsons (Arcade, 1991): The Simpsons will remain one of my top shows of all-time, but the game from Konami is severely overrated. It's a good game, but there's people that act like it's that good. This is a cookie cutter game that is basically Teenage Mutant Ninja Turtles, but with Matt Groening's yellow family. It does have a quirky soundtrack and graphics that got the look of the show's first few seasons. However, add in bosses that take way too hits to beat, health that is scarce and doesn't replenish when going to a new level, and not enough variety in moves, and this is a game that gets too much praise. The two Turtles arcade games and X-Men are Konami beat-em-ups you should try over this.
Teenage Mutant Ninja Turtles IV: Turtles in Time (SNES, 1992): Along with some of the Final Fight games, Turtles in Time is at the top for SNES beat-em-ups. As far as 16-bit era stuff goes, this is extremely overrated, especially for the prices it goes online and in used game stores. That doesn't mean you shouldn't play this because you should be. It looks great, has a nice 90s soundtrack, and plays well with two player. That being said, it's a game you can blow by pretty quick, and with only a few moves, I wouldn't be it high on a list of beat-em-ups. It's not going to make me stop playing Streets of Rage 2. This and Hyperstone Heist on the Genesis are not worth the prices they go for unless you find them at a yard sale.
Grand Theft Auto IV (Xbox 360, 2008): I'm going modern on this last one. This was one of the first titles I played on the 360 when getting one back in 2010. Rockstar brought their biggest franchise to the new generation and it was good. They tried a serious story, it got the look of New York City down right. It felt like you were in it from the car soundtracks to the replicas of stuff like the Empire State Building and Times Square. What was replicated was done well. You can still do the same stuff that was done in the other games on PS2, but why do I consider it overrated? The missions took forever and if you failed, you had to re-do it from the beginning. Friend aspects were cool, but it being mandatory (Let's go bowling) is borderline annoying. There wasn't much activities to do or added. The wanted system was like Driver, but much worse, especially if you wound up with a three star rating or higher. If I'm recommending a GTA game from this last generation, pick up GTA V. It improves on just about every aspect. I wouldn't skip on this game though, especially with the DLC content they had that felt better and tried some new things.
This wraps up this first set of games I consider overrated. If you have games you consider overrated, send a comment about games that would make your list. There could be more of these blogs in the future.