Minecraft Alpha 103 02 Portable [patched] -

or "lost version" myth rather than an official release by Mojang. According to the Minecraft CreepyPasta Wiki

: The game reportedly progresses through three phases where the world begins to break, showing giant holes and bedrock appearing beneath the player. Redstone Text minecraft alpha 103 02 portable

• Minecraft Alpha 1.0.3_02 (Portable) faithfully recreates the raw, early Minecraft experience: simple mechanics, blocky charm, and the unpredictability that made the game compelling in its infancy. It’s best for nostalgia seekers and those curious about Minecraft’s roots, but it shows its age compared with modern builds.

Aesthetic:

This era featured the classic "neon green" grass and high-contrast foliage before biomes were officially added. Going "Portable" with Alpha or "lost version" myth rather than an official