There were several BSSM video games released, most for the Super Famicon System (released as Super Nintendo Entertainment System in the US) and all during the "hay day" of Sailormoon in Japan. None were translated from Japanese to English, and only one was translated at all -- into French -- so unless you can read Japanese and have a super famicon, you won't have any luck playing them. Nowadays there are emulators and rom systems which allow you to play the games on your computer, and you can even find fan translations. Roms are, however, controversial- is it stealing?

In the case of the BSSM games, my personal opinion (Mako-chan's) is that these games are an exception. The exception being that the games are out of production, not for sale anywhere except for resale areas (such as flea markets, game trading stores or ebay) and even then English fans probably won't have the correct system to play them. The English speaking fans aren't even the target audience for the sales in the first place when they were on sale! Add to this the fact that some ROMs out there allow you to not only play the game but to also read the words--- in english -- it's very impressive.
Note: There are several websites where you can download these games from as well as instructions, emulators, etc. The purpose of this site is to provide information on each game- which is different than providing the actual games. If you want them that bad, google it!

Bishoujo Senshi Sailormoon: Another Story
Sailormoon R Puzzle Game
Sailormoon S Puzzle Game
Sailormoon SuperS Puzzle Game
Sailormoon Sailor Stars Puzzle Game
Sailormoon Sidescroller
Sailormoon Arcade Sidescroller
Sailormoon R Sidescroller
Sailormoon S fighting
Sailormoon SuperS fighting

Note: This site is currently not operational. ^_^ One step at a time, trying to get each thing up... but cheer up, at least you know what's coming...