This is a port of xsystem35-sdl2 to the Playstation Vita. xsystem35 is an open-source implementation of AliceSoft's System 3.x game engine.
Installing games
Create a subdirectory under ux0:data/xsystem35/ and copy all .ald and .ain files from the game directory into it.

In order to get BGM, you must rip the CD audio from the game disk and create a playlist pointing to the files (see the section on BGM here). xsystem35-vita defaults to looking for a file named playlist in the game directory so it is not necessary to create a .xsys35rc file.

E.g. the directory for (English) Kichikuou Rance should look something like this:

ux0:
data
xsystem35
Kichikuou Rance
bgm
kichiku_2.mp3
kichiku_3.mp3
...
KICHIKUGA.ALD
KICHIKUGB.ALD
KICHIKUSA.ALD
KICHIKUWA.ALD
System39.ain
playlist
where the file playlist contains:

(The first line in this file is ignored.)
bgm/kichiku_2.mp3
bgm/kichiku_3.mp3
...
Known Issues
Startup time for some games (especially KR) is really bad. This is caused by the game rendering a bunch of invisible text at startup (TTF font rendering on Vita is pretty slow). I have a plan to fix this (use system font rendering API).

The game looks ugly/blurry. The Vita has a vertical resolution of 544 pixels, whereas System 3.x games usually run at a slightly lower resolution (400 or 480). Slight upscaling like this inherently produces a lousy result. You can run games at their original resolution if your eyes start bleeding: just hit the Start button to open the menu and switch fullscreen off.

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