Sailormoon Gameboy
There were two extremely similar Adventure Games made for Gameboy based on the first and second seasons of the anime.

Game Information:

Sailormoon

Bishoujo Senshi Sailormoon; title screen

Console: Nintendo Gameboy
Manufacturer: Angel
Year: 1992
Game-type: Adventure
Playable Characters:
Sailormoon/Usagi [??? Maybe more???]
Basic Story:
Play as Sailormoon to defeat Queen Beryl.

Extra Info:

Walkthrough - basic walkthrough of the story

Boss Strategies - The most effective ways to beat the bosses at the end of the levels.

Sailormoon: R

Bishoujo Senshi Sailormoon: R; Title Screen

Console: Super Famicom System. [Japanese equivalent to SNES system.]
Manufacturer: Angel
Year: 1994
Game-type: Adventure
Playable Characters:
Sailormoon, Sailor Mercury, Sailor Mars, Sailor Venus, Sailor Jupiter
Basic Story:
Play as the senshi to defeat the Blackmoon family.

Extra Info:

Walkthrough - basic walkthrough of the story

Boss Strategies - The most effective ways to beat the bosses at the end of the levels.

Characters - How to use each character, their special moves, etc...

Codes & Cheats - Bend the rules to your advantage.