Epic Games on ilmoittanut lanseeraavansa välineet käyttäjille luoda omia pelejään Epic Games Storelle. Valve on tehnyt saman omassa Steamissaan, mutta Epic Gamesin omakustannesäännöt ovat erilaiset.
Epic Games antaa käyttäjien luoda mitä haluavat, joskin kahden säännön puitteissa. Ensinnäkin aikuisviihdettä ei sallita, ja toisekseen moninpelin on oltava pelattavissa myös muilla PC-pelien jakelualustoilla. Valve puolestaan ei vaadi moninpelien olevan pelattavissa myös muilla PC-pelien jakelualustoilla, ja ilmainen Steamin moninpelin API Steamworks toimii vain Valven hiekkalaatikolla.
Epic Gamesin toimitusjohtaja Tim Sweeney on vahvasti kritisoinut Valven käytäntöä sanoen PC Gamerille, että Steam on luonut ihan aidon ongelman pelialalle Steamworksilla.
"They have a classic lock-in strategy where they build these services that only work with their store, and they use the fact that they have the majority market share in order to encourage everybody to ship games that have a broken experience in other stores," he explained. "We were bitten by this early on with a number of multiplayer games coming to the Epic Games Store. Steamworks didn't work on our store, so they had either a reduced set of multiplayer features or none, or they were just limited to a much smaller audience back in the launch days of the Epic Games Store, so you had a lot of multiplayer games that really felt like they were broken."