To play Tattletail you will need a minimum CPU equivalent to an Intel Core 2 Duo T7250. Tattletail system requirements state that you will need at least 2 GB of RAM. You will need at least 300 MB of free disk space to install Tattletail. Provided that you have at least an NVIDIA GeForce 7200 GS graphics card you can play the game.
Tattletail will run on PC system with Windows 7 or higher and upwards. Additionally it has a Mac version.