Since official app stores no longer host Java games, you must use reputable archive sites. Search for: A long-standing library for J2ME apps.
(Within the context of J2ME gaming). It is an excellent example of how developers maximized limited hardware to create engaging gameplay loops. deep abyss 2d jar download
The game you are looking for is likely the retro mobile title Deep Abyss 2D Since official app stores no longer host Java
If you get no main manifest attribute , the .jar might need a different launch class (rare for complete games). It is an excellent example of how developers
What are you planning to play on (Android, PC, or an old Nokia)? Do you need help setting up an emulator to run the file?
Use KEmulator or MicroEmulator . These allow you to upscale the graphics for a clearer look. Gameplay Mechanics and Tips