From the same author of Within a Deep Forest, comes FiNCK.
FiNCK (Fire Nuclear Crocodile Killer) is a two dimensional platformer inspired by a certain Nintendo 8-bit game.
Though the main world included in FiNCK is free, on fastspring you can purchase custom level support for $4, and for $3 you get 320kbps mp3 files of the soundtrack modified to end properly instead of loop like in the game.
FiNCK
102.7 MiB - 393 downloads
The download includes the game, the editor and a collection of maps.