Crossplay

Is Amalgam crossplay?

Amalgam is only released on one platform, so there is nothing to cross-play with.

Amalgam is a free Half-Life 2 singleplayer mod. Somewhere near City 17, the rebels have been trying to destroy the combine communication towers known as relays. Their efforts have been futile, until now... You as Gordon Freeman, must help the rebels sabotage the combine relays and a mysterious structure called the beacon.