LuaTroid is a project mainly written in Lua, it's free.
More inspired by the Metroid engine than an actual clone, this project is about getting Metroidvania-style gameplay working.
LuaTroid is CC-BY, all other rights not reserved. No warranties, obviously ;3
CC CREDITS:
MUSIC: Through Space - CC-BY-SA 3.0 - MaxStack - http://opengameart.org/user/444
ARTWORK: OpenGameArt Logo - CC-? - OpenGameArt.org alphatiles.png - CC-BY - MaskedRetriever - Moi vira*.png - CC-BY - MaskedRetriever - Moi
Artwork not listed here is CC-BY me, unless I missed something in which case please let me know so I can update the credits. The Dog is many things, but an art theif ain't one of them.