System Requirements

go here for gms2

http://maplestory2.nexon.net/en

Go here for cms2

http://mxd2.qq.com/

Desktop Computer

Minimum Smooth Recommended Best
CPU Intel i3 5th Generation (Haswell) Intel i5 5th Generation (Haswell) Intel i7 5th Generation (Haswell) Intel i7 7th Generation (Kaby Lake)
RAM 4GB 8GB 8GB 16GB
GPU GT 730/GT 630 GTX 750Ti/GTX 750/GTX 650Ti/GT 1030 GTX 1050/GTX 1050 TI/GTX 960 GTX 1060 (or better)
Storage 9GB on 7200RPM HDD 9GB on 7200RPM HDD/SDD 9GB on 7200RPM HDD/SDD 9GB on 7200RPM HDD/SDD
Operating System Windows 7 (64-bit) Windows 10 (64-bit) Windows 10 (64-bit) Windows 10 (64-bit)

Notebook Computer

Minimum Smooth Recommended Best
CPU Intel i5 6th Generation (Skylake) Intel i5 6th Generation (Skylake) Intel i7 6th Generation (Skylake) Intel i7 7th Generation (Kaby Lake)
RAM 4GB 8GB 8GB 16GB
GPU GTX 960M/GTX 950M GTX 1050Ti/GTX 1050 GTX 1060 GTX 1060 (or better)
Storage 9GB on 7200RPM HDD 9GB on 7200RPM HDD/SDD 9GB on 7200RPM HDD/SDD 9GB on 7200RPM HDD/SDD
Operating System Windows 7 (64-bit) Windows 10 (64-bit) Windows 10 (64-bit) Windows 10 (64-bit)

Tested out setups:

Laptop i5-4200m + Intel HD4600. LOW settings about 45-60fps in non crowded areas. 24-35fps in-town. unplayable when too much people.

Netbook i7-3610QM + GTX650m. Medium-high settings. about 50-80fps normally. 35-50fps in-town. about 18-30 fps on a busy world boss map.

Desktop i7-6700k + GTX980 High settings. About 90-100fps normally. 59-60dps in-town and busy world boss map.