Sam's Adventure is a Minecraft Adventure Map that originally released in 2014. It contains over 25 levels that provide tough platforming challenges, fun minecart rides, and more! Freely select completed levels, battle against your friends in competitive multiplayer, or work with them to clear the map's levels. Download available here: https://www.planetminecraft.com/project/sams-adventure-version-09/
Super Sam Flash is a collection of 12 custom levels for the flash game Super Mario Flash that were created back in 2013. Download available here: https://www.indiedb.com/games/super-sam-flash/downloads
These levels were combined and remixed by me last year in Super Mario Maker 2 and can be played by entering my Maker ID (44F-RCL-JXF) and selecting the compilation levels.
Ultrastar: Saga is a turn-based RPG that takes inspiration from the Paper Mario series. The game started development in 2017 but I never ended up finishing it. An early build of the game is available if you are curious, containing 3 hours of content. That can be downloaded here: https://gamejolt.com/games/projectultrastar/250841