Blood and Tears is a good Pokemon Red hack to celebrate the 20th birthday of the author. This hack also has an optional Nuzlocke Mode built in to it, so it enforces the rules for all players who want to experience it.
Pokemon Red 151 is the hack of our classical game Pokemon Red. Instead of a completely new hacked game, it is just a slight modification about the ways to catch Pokemon and something else.
Kanto Explorers: Wisteria: It has been a long time since I last saw a good Pokemon Red hack. The author of this Kanto Explorers: Wisteria is a nostalgic man.
MissingNo. Challenge is a hack of Pokemon Red. When creating this one-day hack, the author has just learned about modifying the RAM data of Pokemon Red. He was able to change the Pokemon party and he changed the first Gary battle inside the lab of Professor Oak.
Pokemon Red ++ or Pokemon Red Plus Plus: Do you want to have a Pokemon Red game, but not the original one? Do you want to play a Pokemon Red with many changes and improvements, much more than the origin which comes from Nintendo?