Guilty Gear X
Guilty Gear X runs on the NAOMI arcade board, and it could well be the most beautiful 2D fighter yet, with its feature high-resolution character sprites and backgrounds.
Gundam Battle Online
The network multiplayer strategy simulation game allows for players to choose between Earth Federation and Zeon in online battles.
Giga Wing 2
You'd be hard-pressed to find a more visually impressive shooter on the Dreamcast, and the game is highly playable to boot.
Game Arts has put together a solid RPG with Grandia II, even if it isn't as deep or difficult as the original.
If a good 16-bit shooter is what you're looking for, you could do a lot better elsewhere.
Gold and Glory: The Road to El Dorado
While the game's plot and gameplay are standard, it's eye-candy that El Dorado excels in. Miguel and Tulio walk, jump, crawl, and meander with countless frames of animation.
Gundam Side Story 0079: Rise from the Ashes
One has to wonder why we should give a crap about sub-Gundam machinery like the GM.