Fallout 2 ported to the PlayStation Vita twice with two new separate homebrew releases
While there might not be any modern re-releases of the old-school Fallout games in an official capacity, modders have been picking up the slack, and then some. Releasing back to back are two separate Fallout 2 ports to the PlayStation Vita, from two different homebrew developers. Isage posted their project, with Northfear following up with their own release a mere few hours later. Both of these ports come from the Fallout 2 Community Edition, an open source version of the game, including community-made performance patches. Going further into the homebrew rabbit hole, Fallout 2 CE was the result of yet another project--Fallout 2 Reference Edition--which was the original reverse engineering project.
Both of the Fallout 2 PS Vita ports are available to download: Isage's version is at v1.2 on GitHub, while Northfear's is at v1.0 and is on VitaDB. In order to get either running on your Vita, you'll need to own the Steam or GOG release of Fallout 2, and copy master.dat, critter.dat, patch000.dat, data, and the sound folders from your PC installation into ux0:/data/fallout2/. Both homebrew developers have worked on Vita projects in the past; Isage has previously ported the Streets of Rage fan remake to the Vita, while Northfear has worked on porting Heroes of Might and Magic II to the Vita.
Isage's Fallout 2 Vita port
Northfear's Fallout 2 Vita port