I'm leaving this topic open for the discussion for people interested in attempting at a .hack game, to show off their progress on either a standalone or game/server client based on The World. If you have a game in the works, let us know your progress. If you need help, seek peer-to-peer support here, or if you need a team, pitch your idea here to find your team.
Useful links to programs
Text Adventure:
ADRIFT http://www.adrift.co/
Inform7 http://inform7.com/
Quest http://textadventures.co.uk/quest
Twine https://twinery.org/
Visual Novels:
Visual Novel Maker https://store.steampowered.com/app/495480
Ren'py https://www.renpy.org/
2D Game:
RPG Maker 2000 https://store.steampowered.com/app/383730
RPG Maker 2003 https://store.steampowered.com/app/362870
RPG Maker XP https://store.steampowered.com/app/235900
RPG Maker VX Ace https://store.steampowered.com/app/220700
RPG Maker MV https://store.steampowered.com/app/363890
Game Maker Studio https://www.yoyogames.com/get
2D Game & Server:
BYOND http://www.byond.com/download/
Eclipse Origins https://www.indiedb.com/engines/eclipse ... /downloads
Elysium Diamond https://github.com/legacygamedev/elysiumdiamond32
Genus https://github.com/jikoriko/Genus
Konfuze http://konfuze.atspace.com/HOME.htm
Mirage https://github.com/link2x/gMirage
3D Game:
Blender http://www.blender.org/
Godot https://godotengine.org/
Unreal Engine https://www.unrealengine.com/en-US/download
Unity https://store.unity.com/download
3D Game & Server:
MMORPG Tycoon 2 https://store.steampowered.com/app/4868 ... _Tycoon_2/
And should you have concerns about CyberConnect2 coming after your project, hear this statement from the CEO himself regarding fan projects.
Basically, go for it!, but don't tell us.
![Wink ;)](./images/smilies/icon_wink.gif)
And BandaiNamco's statement.
https://www.bandainamcoent.com/legal/co ... guidelines
Basically non-profits are good, better if you don't copy/paste textures, models, or art directly from them.
Go forth and good luck!