To play Onii-Chan you will need a minimum CPU equivalent to an Intel Pentium 4 2.00GHz. Provided that you have at least an NVIDIA GeForce 6100 graphics card you can play the game. The minimum memory requirement for Onii-Chan is 512 MB of RAM installed in your computer. You will need at least 3 GB of free disk space to install Onii-Chan.
Onii-Chan will run on PC system with Windows XP and upwards.
