Program: TurboRisk
License: Freeware (since PortableApps is allowing freeware now)
Quote from the website: TurboRisk is really 100% free: no limitations, no time-outs, no nags, no adware, no banner ads and no spyware. It can be freely used and distributed provided that neither code nor documentation are altered in any way.
Description: TurboRisk plays the classic "World Domination Risk" game, where you are battling to conquer the world.
Website: http://www.marioferrari.org/freeware/turborisk/turborisk.html
Other: from the website: TurboRisk doesn't install any DLL or OCX or any other component in your Windows folders. It doesn't use the registry, except to register its Uninstall program.
Using that as a clue, I'm guessing some registry entries will end up in the following:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall