No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $121.7K — a different platform, not this one.

Master of Magic Classic

Master of Magic Classic is one of the most popular strategy games of the 90s and an absolute classic. It is a 4X fantasy strategy game that allows you to play as an extremely powerful wizard, leading your troops and overcoming your magical opponents. After over 25 years, the game now receives the first official update with a significantly improved AI and more than 200 spells at your disposal. Dive back into time, relive this epic adventure and conquer Arcanus and Myrror once and for all!  Master of Magic Classic is also available with the Community Update, a free optional patch developed by fans for fans and greatly increasing the polish of Master of Magic with countless fixes. Combination of strategy and RPG elements Enduring replayability 5 realms of spells and 18 traits to customize your wizard 14 races for you to lead 198 unique types of units 60 special abilities 200 spells 250 editable pre-generated magical items Custom item crafting Available to play with the optional Community Update