Barry Burton is assigned by an underground organization established to put an end to the global operations of Umbrella to infiltrate a luxurious passenger ship that is said to be hauling BOWs and find Leon S. Kennedy, whom they sent in but lose contact.
Whenever you engage in combat the game changes to a first-person combat mode with a reticle constantly moving to the left and right, essentially what most golf games do. This makes combat unnecessarily tedious and repetitive since enemies can do a bunch of damage to you while you struggle to land good shots.
What's worse is the placement of enemies, which makes them near impossible to avoid since you can't lure them away as they're programmed to stay in a certain area and their range is random as they can sometimes grab you without being near you.
There is only one boss in the whole game that you fight throughout that plays out just like normal enemies except he does more damage and require more hits to kill.
This is the only game that is not part of the official canon since it contradicts certain events of later games as Leon is shown with a green bleeding wound at the end and this infection would have made Resident Evil 4 impossible.
The enemy variety is very lackluster as there are only zombies and zombies with crowbars.
There aren't any actual puzzles as you mostly just find keys by exploring or by killing zombies that have a red exclamation pop up when near them. Bare in mind, you won't actually know if they have a key on them or not, which just forces you to waste ammo.
The small cutscenes in the game look silly at times due to how goofy the characters look.
The cover shows Leon in his RPD uniform, which doesn't make sense since the game clearly takes place after Resident Evil 2 and Leon is never shown wearing it.
The soundtrack gets pretty repetitive since it plays the same two several times over.
The game reuses a plot thread from the first Resident Evil as it has the player suspect that Barry is a traitor only for him to be a double agent.
The graphics look really good for a Gameboy Color title.
The idea of Lucia possessing the ability to see BOWs is not a bad idea. In fact, her character would return in the form of Natalia from Resident Evil: Revelations 2.
A decent story about Leon and Barry hunting a BOW that has taken over a cruise ship.
Resident Evil Gaiden received generally mixed reviews from critics with many praising the visuals and storyline, but criticized the lack of puzzles and combat system. Fans are also divided as one side considers it one of the worst entries in the Resident Evil franchise, while others consider the game to be underrated.