If you’re interested in playing the MetaZoo trading card game online with other players, you are able to do so via Tabletop Simulator (TTS).
Tabletop Simulator is available via Steam for USD$19.99 right here. It can only be played on PC, and you will need a free Steam account.
MetaZoo is not an official Tabletop Simulator game at this time, however a MetaZoo TTS mod was developed by Steam user Tiresome Lime that initially launched on March 29th, 2021.
Subscribe to the mod right here. This is required to play.
To learn how to install and play MetaZoo on TTS, have a look at this helpful YouTube video released by Kevin Cote.
MORE ABOUT TABLETOP SIMULATOR:
Tabletop Simulator was developed and published by Berserk Games and initially released on June 5th, 2015.
In the words Berserk Games themselves:
Tabletop Simulator is the only simulator where you can let your aggression out by flipping the table! There are no rules to follow: just you, a physics sandbox, and your friends. Make your own online board games or play the thousands of community created mods. Unlimited gaming possibilities!Berserk Games