The drivers of the mouse are bugged and while playing games it randomly disconnects and stops working. The driver has been broken for about a month now and steel series hasn't issued the bug fix yet. DONT BUY TILL THIS ISSUE IS FIXED. refer to this reddit post to check it is fixed.

The Steelseries Rival 500 reinvents the MMO and MOBA inspired gaming mouse.

Good button placement; Intuitive design; Useful software tools

Poor build quality; Chalky exterior

In looking for a new MMO mouse, my primary requirements were good build quality that should last at least 2–3 years, enough buttons to get by, and no wireless. As one of the few quality MMO mice not to use a 12-button thumb array, the Rival 500 has a memorable button layout so I don't usually find myself hitting the wrong buttons. The one niggle is the thumb button placement. I use a palm grip with wrist well back, resting on the table, and I've found the front two buttons to be barely reachable with my thumb. If you have a different grip or large hands this shouldn't be an issue but it may be worth finding one to try out before you buy.

is a bit of a novelty mouse. Its tactile alerts are useful, but its tiny OLED screen isn't. Unfortunately, while it's a high quality product overall, I discovered a few issues with it in my review. I also thought the Rival 700 was priced too high, possibly because of its gimmicky OLED screen.

The Rival 500 isn't a great mouse, but its innovative thumb layout and the inclusion of haptic feedback are interesting glimpses of the future.

Intuitive and useful thumb-button layout; Beloved PWM3360 sensor; "Tactile Feedback" is like controller rumble in a mouse

"Tactile Feedback" is only in a handful of games; Short; squat; and heavy; Tons of buttons; but none feel great to press

What's all this under my thumb? That's the first thought I had when using the SteelSeries Rival 500 mouse (available for $80 on Amazon ), and most likely the first thought anyone would have with this device-there's a lot to take in.

The Rival 500 is the best MMO/MOBA mouse we have ever been presented! With the addition of SSE3, this mouse is outstanding in its abilities and customization. Accuracy and control, all in a comfortable, affordable, and ergonomically designed layout.

Engine 3 driver program will not load on my Alienware machine, at request of Steel Series I sent a number of files and was told I would hear from them in 1-2 weeks, its now been 2 months and they totally ignore my service tickets. Time to find a good mouse I guess.

I love this mouse, use Razer Mice for years but a year or so ago I brought a SteelSeries Sensi Wireless mouse kind of spare of the moment and I was very impressed, I went on to my a M800 Keyboard from them.

Good overall build quality. Thumb buttons are awkward to use, but become manageable with practice, was about as hard as learning to use the steelworkers cata mouse. Great sensors, lighting is fun, lots of built in software to sync the lifts to music or games or whatever you want.