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J2Vita v0.9.1 by KiddRwxSsj
Last Release: Nov 2, 2026
Downloads: 26
Last Release: Nov 2, 2026
Downloads: 26
Downloads: 26
J2Vita lets you play your old Java ME (J2ME) phone games on the PS Vita. It runs MIDP 2.0 / CLDC 1.1 games, the .jar games every phone had before smartphones. It's built on PSPKVM, the Java ME virtual machine for the PSP, which is based on Sun's open source phoneME Feature VM. The Java side is mostly left alone, and the Vita side (video, input, sound and menus) was rewritten for the Vita.
The game list and menus follow a classic phone style, with four themes (White by default). Each game can have its own screen, filter, rotation, resolution and control settings, on top of the global defaults. The touchscreen works as the phone's touchscreen, and an on-screen keypad (hold SELECT) covers cheat codes and keys the Vita doesn't have. There is also a performance overlay to check whether a game is running at full speed.
The game list and menus follow a classic phone style, with four themes (White by default). Each game can have its own screen, filter, rotation, resolution and control settings, on top of the global defaults. The touchscreen works as the phone's touchscreen, and an on-screen keypad (hold SELECT) covers cheat codes and keys the Vita doesn't have. There is also a performance overlay to check whether a game is running at full speed.
3D games, faster 2D games and a bunch of fixes.
Install `j2vita.vpk` over 0.9.0 with VitaShell. Your games, saves and settings stay.
**New**
- 3D support: MascotCapsule Micro3D v3 and M3G (JSR-184). Resident Evil: The Missions and Resident Evil: Degeneration are playable.
- Games are picked up on their own. Drop a `.jar` into `ux0:data/j2vita/games/` and it shows up in the list. Overwrite it to update the game.
- Type names and text with the Vita keyboard: hold SELECT for the keypad and pick **Text**.
- AMR sound effects now play.
- New 480x320 and 320x480 screen sizes.
**Faster**
- Java code runs about 1.7x faster. Busy games like Spider-Man: Ultimate Power hold their frame rate much better.
**Fixed**
- Heroic Epic and Heroic Epic 2 start and play.
- Rollercoaster Revolution gets past the loading bar.
- Games that ask for motion sensors no longer stop.
- Float math (`Float.intBitsToFloat`, `Math.sin` and friends) returned garbage.
- Characters in MascotCapsule games slid around instead of walking.
**Known issues**
- The Amazing Spider-Man 2 still slows down with a lot of enemies on screen.
- TimeRider II music sounds different from Android emulators.
- No networking or Bluetooth yet.
The source for this build is the v0.9.1 tag (GPL v2).
Install `j2vita.vpk` over 0.9.0 with VitaShell. Your games, saves and settings stay.
**New**
- 3D support: MascotCapsule Micro3D v3 and M3G (JSR-184). Resident Evil: The Missions and Resident Evil: Degeneration are playable.
- Games are picked up on their own. Drop a `.jar` into `ux0:data/j2vita/games/` and it shows up in the list. Overwrite it to update the game.
- Type names and text with the Vita keyboard: hold SELECT for the keypad and pick **Text**.
- AMR sound effects now play.
- New 480x320 and 320x480 screen sizes.
**Faster**
- Java code runs about 1.7x faster. Busy games like Spider-Man: Ultimate Power hold their frame rate much better.
**Fixed**
- Heroic Epic and Heroic Epic 2 start and play.
- Rollercoaster Revolution gets past the loading bar.
- Games that ask for motion sensors no longer stop.
- Float math (`Float.intBitsToFloat`, `Math.sin` and friends) returned garbage.
- Characters in MascotCapsule games slid around instead of walking.
**Known issues**
- The Amazing Spider-Man 2 still slows down with a lot of enemies on screen.
- TimeRider II music sounds different from Android emulators.
- No networking or Bluetooth yet.
The source for this build is the v0.9.1 tag (GPL v2).
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