The World Identification Number System (or WIN) is a system of codes used to identify different universes and multiverses. In most cases, the WIN follows a specific format. First is the multiverse number and then the universe number, with the two separated by a hyphen. In the case of a Pocket Multiverse, a third section is placed in between the others.
List[]
| WIN | World |
| 11711 | Seuss Universe |
| 808 | View Askewniverse |
| DC | DC Multiverse |
| FOX-MCGR | Fox Universe |
| GWL | Star Wars Multiverse |
| HLP | Valve Multiverse |
| LON | Horror Multiverse |
| LRGH | Lone Ranger Multiverse |
| LWW | Narnia Multiverse |
| M | Marvel Multiverse |
| MQN95 | Cars Universe |
| N10 | Nintendo Multiverse |
| NCK | TeenNick Universe |
| NKTN | NickToons Multiverse |
| QJT-A | Tarantino Universe |
| QJT-B | Tarantino Movie Universe |
| SLYR | Buffyverse |
| TOHO | Kaiju Multiverse |
| TOY | Toy Story Universe |
| WFSTN | Doomiverse |
| WHO | Whoniverse |