If you're looking for the best gaming mouse for playing MMO games, Logitech's G600 is probably on your radar. It offers way more buttons than your average mouse and tracks fairly well, and it's marked down to just $29.99 right now.
That's $50 off its list price. While the $79.99 MSRP is a bit ambitious, this is one of the cheapest prices we've seen for this rodent.
The G600 has 20 "MMO-tuned" buttons, include 12 buttons that are handily accessible on the left-side thumb panel. There is also a G-Shift button that effectively doubles the number of actions you can perform, and an 8,200 dpi sensor underneath the hood.
Note that this is a wired rodent. If you'd prefer a mouse with no tail, check out our list of the best wireless gaming mice for some alternative suggestions (albeit none are specific to the MMO category).
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