Spectrobe Game Multiverse fanfic

Five scenarios I thought of for spectrobes, first scenario the actual characters from the spectrobe series travel through portals like they do in the games that will lead them to different worlds and universes like the Marvel Universe, DC Universe, or an anime world like One Piece, Danmachi, or My Hero Academia, the characters will have all the weapons, items, and spectrobes they ever gotten through the 3 games with them in their travels. In the second scenario, a person is reincarnated or transmigrated with the wish or wishes to have all the items, weapons, ships, and spectrobes from the games, and just like the first scenario travels to other worlds. In the third scenario, just like the second scenario but he stays in one world. In the fourth scenario, a person is reincarnated or transmigrated with a system that gives him access to stuff from spectrobes like weapons, items, spectrobes, or ships, but he has to do missions to earn currency to purchase them, or gain points to roll a gacha you get the idea and just like the first scenario he later is able to travel to different worlds. Lastly, in the fifth scenario, it's just like the fourth with the system, but he stays in one world just like scenario three.