MultiworldGG vs Universal Pokémon Randomizer FVX

MultiworldGG is a multi-game randomizer that joins supported games in one multiplayer session. An item found in one player’s game can be assigned to another player, and supported games can also be generated as single-player experiences. The project is a fork of Archipelago, with tweaks and additional third-party worlds. Players can generate locally with the desktop client or use the website by uploading YAML configuration files or ZIP archives. Lobbies let participants upload configurations and coordinate in chat before a host generates the multiworld. Hosts can upload a generated ZIP or multidata file and provide trackers and patch-file downloads. Installations include a launcher, generator, server, and some clients; desktop downloads are available for Windows, Mac, and Linux. The website also links tools such as a text client, checklist tracker, and manual world client. Website-generated multiplayer games are limited to 30 players; larger games must be generated locally. Many catalog worlds are still in development and may be buggy or unfinished. MultiworldGG is free and open source.

Universal Pokémon Randomizer FVX is a free, open-source desktop tool for changing data in vanilla core-series Pokémon games from Generations 1–7. It supports games for Game Boy, Game Boy Color, Game Boy Advance, Nintendo DS, and Nintendo 3DS, with Pokémon: Let’s Go, Pikachu! and Let’s Go, Eevee! excluded. Options cover Pokémon traits, evolutions, starters, moves, trainer and wild Pokémon, items, and type effectiveness. FVX adds palette randomization and custom player graphics, with support varying by generation: palettes are fully supported in Generations 1–3, partly supported in 4–5, and unavailable in 6–7; custom player graphics are limited to Generations 1–3. A seed and settings string can reproduce a randomization, and logs can be disabled to prevent spoilers during races. Users must provide their own ROM files. ROM hacks are not officially supported. For 3DS games, files must be decrypted; randomized output can be saved as CXI or LayeredFS. If a game update is loaded, LayeredFS is the only output option. The tool runs on Linux, macOS, and Windows.