| Aka: | SM64 Internal Castle Plexus, Super Mario 64 Internal Castle Plexus |
| Console: | Nintendo 64 |
| TV Standard: | Other |
| Release Date: | 2021-04-26 |
| Players: | 1 |
| Co-op: | No |
| ESRB: | Not Rated |
| Type: | Adventure, Platform, Horror, Unofficial |
B3313 or Build 3313 (also called SM64 Internal Plexus) is a ROM Hack of Super Mario 64 developed by Chrisbrutalagresion and his dev team. It is the largest beta-based SM64 hack to date, especially regarding the number of accessible areas, but also the star count and various other aspects. It is currently in development, with the latest public release being V0.7.
