A Silph Co. warehouse is north of the gatehouse. Depending on the game, it can be entered to find items, trainers and wild pokémon.
Gatehouse[]
Pokémon Brown[]
The guard here will normally prevent the player from progressing, but if they have a Beer Keg in their inventory, he will take it and fall asleep. The player can then pass through for the rest of the game.
If the player has no Beer Keg, but does have a Soda Pop or Lemonade, then the guard will take that instead (although his dialogue will still refer to beer). However, either of these drinks are more expensive to buy than a Beer Keg, so there is no real benefit to doing this.
Maps[]
Maps
Brown
Prism
Rijon Adventures
Trivia[]
CHEAT :(
If the Walk Through Walls cheat is used in Pokémon Brown, traveling East will lead to Route 67 (west of Hayward City). The patches of tall grass North of the Silph Warehouse spell out "CHEAT:(".