In terms of game file size, you will need at least 200 MB of free disk space available. An Intel Core 2 Duo U7600 CPU is required at a minimum to run Stickman.io. Provided that you have at least an NVIDIA GeForce 8500 GT graphics card you can play the game. Stickman.io system requirements state that you will need at least 2 GB of RAM.
Stickman.io will run on PC system with Windows XP, Vista, 7, 8.1, 10 and upwards.