Super Mario Fallen Stars is a demo made by Skillux which was never completed. The game features four colorful levels and 45 stars.
All three Cap Switches are sitting out in the open in the overworld. The Toad in the overworld refers to Bowser's Ice Mountain as "Bowser's Lair" but Bowser does not make an appearance in this game.
Super Mario Parallel Stars is a Rom Hack with 151 Stars. It is the first casual hack from Japan. Starts with easy levels (like mid-game of vanilla), but becomes difficult (not kaizo) near the end of game.
Water Star Adventure is a ROM hack for Super Mario 64. It is the seventh installment of the "Star Adventure" hack series, featuring 7 courses with 30 stars including a Bowser fight.
The gimmick, as the game title implies, it has a new mechanism using water physics that the player can use to swim to navigate unreachable places. The plot is bound with philosophy and religious metaphors and most stars and NPCs will tell the player have more or less relevance in the gameplay.
A mod for Super Mario 64 which makes Mario's physics the same as those from Super Smash Bros. Melee, allowing techniques like the wavedash and middair jump.
Mario's Vacation Course 64 is a ROM hack/mod of Super Mario 64 developed by Reonu. In this game, Mario spent so much time on vacation that he forgot all of his moves, and the player has to recover his memories, on a open-world-like playground where the player has to find and get stars. This mod is inspired by Bowser's Fury (Switch) in its style, music and level design.