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Below are the addresses which determine which map will be loaded when the player enters a map transition, as well as documentation for all valid values. Credit for finding the US version address as well as the value to bring the player to 'Entryway' goes to Lemurboy12 from TCRF. Using the documentation I created for the US version's map values, I was able to isolate the address for the Japanese version as well. I haven't yet been able to isolate the address(es) that determine what state the game loads the map in (for example, it is possible to free roam in the bedroom, map 0, but without the proper address(es) set the player just loads into the first cutscene). This seems to be the same reason that Abra's shop crashes on load.
| Hey You, Pikachu (US) | ピカチュウげんきでちゅう (JP) | |||
| 800AE503 0000 | The Bedroom | 800B2C83 0000 | じぶんのへや | |
| 800AE503 0001 | Entryway | 800B2C83 0001 | げんかん | |
| 800AE503 0002 | Front Yard | 800B2C83 0002 | うちのにわ | |
| 800AE503 0003 | Entrance to Viridian Forest | 800B2C83 0003 | トキワのもり いりぐち | |
| 800AE503 0004 | Viridian Forest | 800B2C83 0004 | トキワのもり | |
| 800AE503 0005 | Deep in Viridian Forest | 800B2C83 0005 | トキワのもり おく | |
| 800AE503 0006 | Entrance to Springleaf Field | 800B2C83 0006 | モエギそうげん いりぐち | |
| 800AE503 0007 | Oddish's Meadow | 800B2C83 0007 | ナゾノクサのすみか | |
| 800AE503 0008 | Springleaf Field | 800B2C83 0008 | モエギそうげん おく | |
| 800AE503 0009 | Olivine Lakeshore | 800B2C83 0009 | アサギのみずうみ きしべ | |
| 800AE503 000A | Olivine Lake | 800B2C83 000A | アサギのみずうみ | |
| 800AE503 000B | A Pokemon Picnic Part 1 | 800B2C83 000B | アカネのもり いりぐち | |
| 800AE503 000C | Deep in Ochre Woods | 800B2C83 000C | アカネのもり おく | |
| 800AE503 000D | Cobalt Island | 800B2C83 000D | スオウじま | |
| 800AE503 000E | Cobalt Coast | 800B2C83 000E | スオウかいがン | |
| 800AE503 000F | Abra's Shop (Crashes) | 800B2C83 000F | Abra's Shop (Crashes) | |
| 800AE503 0010 | Wilderness Camp | 800B2C83 0010 | キャンプじょう | |
| 800AE503 0011 | Ochre Fishing Hole | 800B2C83 0011 | アカネのうりば | |
| 800AE503 0012 | Olivine Fishing Hole | 800B2C83 0012 | アサギのつりば | |
| 800AE503 0013 | Cobalt Fishing Hole | 800B2C83 0013 | スオウのつりば | |
| 800AE503 0014 | Viridian Forest Edge | 800B2C83 0014 | トキワのはずれ | |
| 800AE503 0015 | Pikachu's Playground | 800B2C83 0015 | うらのあきち | |
| 800AE503 0016 | Menu and Credits | 800B2C83 0016 | メニューとスタッフロール | |