: pay-to-play free-to-play. , . — , . . — pay-to-win, , .
, . MMO, : freeware donationware.
Freeware — , - . , , , «» , .
Donationware — , , , . Battleburg (1987 ), , , .
— , , .
, :
• UFO: Alien Invasion — , 2007 .
• HoMM III: In the Wake of Gods — « 3», , — CoreWoG.
. , , .