We don't really think you need one. Just humming your favorite tune while playing is perfectly fine.
200 MB available space
The cheapest graphics card you can play it on is an NVIDIA GeForce GTX 950. But, according to the developers the recommended graphics card is an NVIDIA GeForce GTX 970. In terms of game file size, you will need at least 200 MB of free disk space available. An Intel Core i3-530 CPU is required at a minimum to run ISLANDERS. Whereas, an Intel Core i5-650 is recommended in order to run it. The minimum memory requirement for ISLANDERS is 2 GB of RAM installed in your computer. Additionally, the game developers recommend somewhere around 4 GB of RAM in your system.
ISLANDERS will run on PC system with Windows 7, 8 or 10 and upwards.