Gaming On a Quad-Core 1.8 Ghz?

No. Do not get a laptop for gaming unless you have to for portability. And if you must, you will definitely need something beefier than 1.8ghz.

If you plan to play games, then get laptop having dedicated ATI Radeon or nVidia GeForce graphics card

1.8 GHz is not that good, but it helps to have 4 cores by far. It will be OK, but you may need to slightly reduce some graphics settings. Minecraft ain't TOO bad on my Core 2 Duo 2.0 GHz. But 4 cores is very good, so remember.

Can work well for lol and mc

GHz isn't a measure of speed, so that doesn't really tell us what processor you are using. Those who think it is misunderstand how CPUs work.

It gives a vague idea but if you want feedback on a CPU's speed you need to post it's name (like an Intel Atom, or i7 4790, or AMD A6, etc.

If you want a good gaming laptop it needs to have a dedicated video card, not integrated graphics.

More cores doesn't help you a lot of they are slow.

1.8 ghz was an early 2000's speed cpu. Most new computers are around 3 point something now, most gamers (HD players) are around 4 point something now, and those elite over clockers are in the 5s…

So comparatively. Its a bit under powered unless you plan on playing minimum settings.

Should check the required specs for the games you plan to use.

Your question is not clear… What processor/configure/GPU of your laptop!
a very simple answer is no… Your can't play any kind of modern games by this configure