>>50391715RGBY had several roadblocks.
You couldn’t get to Route 23 without badges.
The drunk old man stopped you from leaving Viridian City.
The kid in Pewter forced you to get the Boulder Badge.
Cut prevented you from getting to Route 9 without going on the ship.
You can’t go on the ship without talking to Bill.
The officers prevented you from going to Saffron City in every angle. You were forced from Route 5 to the tunnel to Route 6 to Vermillion. You needed to go to Celadon for Tea.
The eastern Snorlax blocked you from Route 12, Fuchsia City, and Lavender Town. You had to go to Rock Tunnel to get to Lavender.
You had to clear Fuchsia City and Team Rocket’s Hideout to get the Silph Scope.
You had to clear the Pokémon Tower before you can get the Poke Flute.
Western Snorlax blocked you from Fuchsia City again.
You had to go to the Safari Zone for both Surf and Strength.
You had to go to the mansion before challenging Cinnabar Gym.
RGBY were notoriously linear.