Seirei no Moribito
Sporting an interesting fantasy world with an Asian flare, making for a refreshing departure from the usual European, Tolkien-inspired realms that the genre usually favours, Seirei no Moribito was a very good anime that flew past a lot of people's radar. The cast of characters were well developed, and it had one of the best female leads ever. By the end, it was sad to see the series end, even more so because it's based on a series of books in Japan, most of which have never been translated into English. With that, the anime and books make for a massive world filled with interesting people that would make for a very good game. Some sort of action RPG in the tradition of Elder Scrolls or The Witcher would be a good fit here, allowing players to wander the land as they see fit bouncing between the main quest line and optional side quests.
Jormungand
A game about arms dealers just makes sense. It would be gritty, violent, and with just a touch of quirky charm. The closest thing we've ever gotten to a Jormungand game was a cross promotion with Black Ops II, but a proper standalone would be so much better. Make the thing mission-based with the team going on hunts, there could be other times where Koko has to work her negotiation skills, and even times to appropriate weapons from other gun runners. There's a lot of places that a game based on this series could go.
Black Lagoon
Here's another example of a group of unsavory yet lovable criminals who deserve their own game. Revy and the gang could take up all sorts of contracts whether it's smuggling contraband, stealing weapons, or taking down rival gangs. Given that it's Black Lagoon that we're talking about here, guns would play a big part with no lack of opportunity to shoot all of the things and all of the people. With a lot of the show taking place on out of the way Pacific islands, boats could also play a role, maybe something akin to a combination of Hydro Thunder but with your vessel armed to the teeth.
Rokka: Braves of the Six Flowers
It's been a few months since the first, and probably only season of Rokka: Braves of the Six Flowers ended with a big cliffhanger that will only be resolved by trawling the internet in search of a fan translation for the light novel. Nonetheless, what the show had looked every bit like something that would work well as a game.
The obvious way that such a game could go would be for over the top action. The characters in the show have their own unique abilities that would make them stand out in terms of combat. A quick, easy way to go would be a fighting game similar in spirit to the stuff we've seen centered around Naruto, Dragonball, Saint Seiya, and the like. Maybe be a little more daring and make something that feels more like Powerstone. Then again, the show did have a have a heavily cerebral element with the locked room mystery, which would be something interesting to implement into the game, but it's a very big contrast to the action elements. Perhaps coming up with a way to make a Zero Escape with an action game could be doable, but making such distinct ideas work together may prove a challenge.
Fooly Cooly
After revisiting Jet Set Radio, I got in the mood for some stylish gaming. This got me thinking about Fooly Cooly, which was quite the stylish anime, and I wondered how well would this work as a game. The show can feel borderline surrealist with some of the stuff going on in it, which would lend well to going for a more unique visual presentation. It wouldn't have to be anything terribly complicated gameplay-wise. Have some combat elements, toss in areas where riding on a scooter is a must, and Haruko should have plenty of opportunity to wreck havoc.
Log Horizon
There has actually been a half-baked mobile game to come out and cash in on Log Horizon, but nothing proper, let alone good. It wouldn't take much to make something respectable based on the show. Developers could go all-in and make a full-on MMORPG set in the same world; however, I could see that being both expensive and risky in an environment where the genre is struggling to turn a profit outside of a handful of games. What would make more sense is a single-player JRPG with a lot of MMORPG elements. It would be a hell of a lot easier to develop without depending on subscriptions or hoping people take a liking to your in-game shop. The game could be something in the spirit of .Hack with various quality of life updates to bring it in line with modern games in the genre. Log Horizon is the first anime based on an MMORPG in a while that has turned out pretty good. Seeing a concerted effort to make a good game based on it would be great.
Outlaw Star
To this day, it boggles my mind that one of the best anime series of the 90s never got a game based on it. In the very least, I'd have expected the typical rush job as some publisher tried to turn a quick buck on a popular show of the time. There were no lack of anime-based games doing this then, but somehow Outlaw Star slipped through the cracks. It's probably for the best, but since such a game was never made, it tends to bring up the question, "What if?"
It's not like the show is lacking material to make a decent game. It has an interesting ensemble cast, plenty of adventuring around the cosmos, and nifty enemies too. Outlaw Star has a ton of content to draw upon. Realistically, it's probably too late to bother making a game based on the show since most of the people who actually remember it are old fogies like me, but that doesn't change the fact that it could still make for an entertaining experience.
No Game, No Life
The whole premise of the show is siblings who are amazing at any game they play. It wouldn't be that far of a leap to make an actual game of them doing this. The only major challenge would be keeping it interesting and the games challenging since they would be so varied. There's the risk of it feeling like a bunch of rushed mini games lacking any real depth. If that could be overcome, though, there'd be a lot of potential here. From a story perspective, the show / manga are quite funny with plenty of parody moments in them, so the game would have that going for it as well.
Gate
This show has a huge gaming / anime nerd as the main character who also just so happens to be in the special forces of Japan's military. It basically has a modern army going on various adventures in a fantasy world full of wizards, elves, and dragons. That in mind, there's gotta be a way to make this into a decent game. Give players the option to play as Itami, Rory, Lelei, and Tuka, either going for a JRPG or an action game. There's a lot of directions one could go here.
