To download Mercenaries: Playground of Destruction on PC, you can try the following options:
Mercenaries: Playground of Destruction is considered —a game whose copyright holder (now Microsoft, after acquiring Activision Blizzard and the old LucasArts catalog) no longer sells it or supports it. No digital storefront offers it. No remaster exists.
You can run the PS2 version of the game. Users often recommend this, though some graphical glitches (like missing sky textures) can occur. Xenia (Xbox 360 Emulator):