Jump 'n Bump

About this profile

Detail	Value
Type	libretro
Classification	Game engine
Source	https://github.com/libretro/jumpnbump-libretro
Upstream	https://github.com/fabiangreffrath/jumpnbump
Version	0.1, stated in libretro.c
Revision	libretro/jumpnbump-libretro@2cc840155ce4
Profiled	2026-03-24
Profile	YAML, JSON
Cores	jumpnbump

Technical notes

Libretro port of Jump 'n Bump, a multiplayer bunny-stomping platformer originally by Brainchild Design (1998). Released as freeware under GPL.

The core loads a .dat archive file as content via retro_load_game(). All game resources (sprites, sounds, levels, fonts, music) are packed inside the .dat file. No system directory files, BIOS, or firmware required. The .dat file is built from the data/ directory by the jnbpack tool in the upstream repo.

Extra levels are available from brainchilddesign.com as additional .dat files.

No BIOS or firmware files required.

Next steps

• Get your files, for the setup you play on
• Every system, and the files each one needs
• When a game does not start

Data as of 4 November 2026.