Here's a quick list of worlds I roll for now. I have a decent grasp on these I won't outright AU them off the bat.

DxD (anime)

Naruto (manga not anime)

Babylon 5 (movies and tv not books)

Aliens (movies could fuck me if they get here)

Batman (movie dark knight)

A galaxy unknown (book series by Thomas DePrima)

Troy rising (book series by john ringo)

StarCraft (game)

Diablo (game not any books)

Nothing (no sentient life)

Space (doesn't land on a planet)

Gate and thus the jsdf fought there (manga)

500bc (finds ancient rome)

highschool of the dead (manga)

Sea quest DSV (tv show)

Stargate universe (tv show)

Buffy the vampire slayer (tv show)

HP but in 1900's (HP world but set before Grindelwald)

Stargate sg1 (tv show, not movies or books)

Ironman (movie universe, marvel is to big)

Starwars (set at anytime in that universe)

startrek enterprize (tv show)

starship troopers (movie, not books because that's way different)

big bang theory (tv show, funny if I could steal all of them to work for me)

cadallacs and dinosaurs (tv show, I loved as a kid made no sense but I liked the world)

caprica (tv show pre battlestar)

sword art online (anime, would steal there tech)

gundam wing (anime, gundam metal would be nice along with power plants)

doll house (tv show, programing people tech)

farscape (tv show)

game of thrones (books but will use tv show for things I forgot)

the pretender (tv show)

highlander (tv show not movies)

halo (books and game)

knight rider (tv show)

outerlimits (tv show episodes that interest me or fuck me hard)

terminator (movie and maybe tv show)

tron (movies)

transformers (movie)

spiderman (movie)

v 2009 (tv show)

aliens vs predator (movie could fuck me if aliens get to my world)

district 9 (movie)

fast and furious (movie)

gantz (manga)

guyver (movies)

eve online (game lore)

World of Warcraft (game not books)

Limitless (movie)

Lost in space 1998 (movie)

Matrix (movie)

Oblivion 2013 (movie)

Outlander (movie 2008)

Resident Evil (movie)

Robotech (anime or movies)

Underworld (movie)

Warhammer 40k (lore but I can only remember 70% would need to recheck things)

ghost in the shell (anime)

arpeggio of blue steel (manga and anime)

asobi ni iku yo (anime)

dragon ball z (anime)

isekai no seikishi monogatari (anime)

monster musume no iru nichijou (manga)

log horizon (anime)