According to GOG.com and G2A , the game has very low hardware requirements, making it playable on almost any modern PC: METAL SLUG - GOG SUPPORT CENTER
: Play the original missions (1 to 6) as the charismatic soldiers Marco and Tarma to stop General Morden's coup. Metal.Slug.GOG.rar
: Select and replay any previously unlocked stages to practice your skills. According to GOG
The versions available on GOG.com include several modern enhancements to the original 1996 arcade experience: According to GOG.com and G2A
: Configure controls, display settings, and language through the GOG Support Center or in-game menus. System Requirements