Irem was a developer and arcade manufacturer, known for titles such as Moon Patrol, R-Type, In the Hunt and the GunForce series (none of which I've ever touched, sorry).Įverything was well and good until in 1994 Irem ceased all videogame development and shut down its gaming division, leaving roughly 100 employees without a job and to search for a new company (famously some developers stuck with the company until the bitter end to ship Gunforce II, without time to implement a staff credits roll). To talk about Metal Slug's beginnings, we have to start from Irem.