You will need at least 2 GB of free disk space to install Overdungeon. Overdungeon system requirements state that you will need at least 4 GB of RAM. To play Overdungeon you will need a minimum CPU equivalent to an Intel Pentium 4 2.00GHz. Provided that you have at least an NVIDIA GeForce 7200 GS graphics card you can play the game.
Overdungeon will run on PC system with Windows 7 SP1+ and upwards. Additionally it has a Mac version.