Development:Pokémon Red and Blue/Sprites - The Cutting Room Floor

What Dreams May Come: Prototype Data for Pokémon Red and Green – Helix Chamber

Game Boy / GBC - Pokémon Red / Blue - The Spriters Resource

Pokémon Infinite Fusion (Video Game) - TV Tropes

Pokémon Red and Blue Versions - Bulbapedia, the community-driven Pokémon encyclopedia

The 100 Hardest Video Game Levels, Ranked

Analysis of the first-generation Pokémon game development process

Let's Play! - Gotta Play (A Handful) Of Em' All (Current Project: Pokemon SoulSilver)

Pokémon Red and Blue/Unseen Graphics - The Cutting Room Floor

Pokémon Red & Green Demo Leak Reveals Unused Evolutions And More

Let's Play! - Gotta Play (A Handful) Of Em' All (Current Project: Pokemon SoulSilver)

What Dreams May Come: Prototype Data for Pokémon Red and Green – Helix Chamber

Pokémon Red and Green beta - Bulbapedia, the community-driven Pokémon encyclopedia

Pokémon Gold Beta Reveals Scrapped Evolutions, Pre-Evolutions of Beloved Pokémon