Garry's Mod

Garry's Mod (commonly abbreviated as GMod and typecased as garry's mod), is a sandbox physics game created by Garry Newman, and developed by his company, Facepunch Studios. Garry's Mod was originally a mod for Valve Corporation's Half-Life 2, but was later made into a standalone release in 2006 for Microsoft Windows, published by Valve Corporation. Later updates saw an OS X build added in 2010, and a Linux build in 2013.

Kushowa used this software to making Garry's Mod video so he can made an episode for Kushowa's Odd Gmod Videos and he used this software to making live streaming of gameplay in both Youtube and Twitch.