This was heavily inspired by the Adam Atomic "Abandonauts" set, a minimalist Metroid-alike set which is also available on this site, and which was used to great effect in the Android game "Mission Massive Migration".

Here I was aiming for something about halfway between that and Turrican.

A couple of tiles in this set are based on tiles from Abandonauts, and there are a couple of others based on surt's "Metroidal" post. The rest is drawn from scratch.

License is OGA-BY 3.0 so a link to this page, or "Space War Man by Emcee Flesher on opengameart.org", is the only required credit.

Now also includes a boss enemy, adapted from a character in the "Superpowers" set (CC0). He uses the same palette as the main set. I think that the original author of the character is somebody called "Pixel-boy".

Abandonauts set is here: https://opengameart.org/content/abandonauts-8x8-tile-assets
"Metroidal" is from surt's CC0 thread: https://opengameart.org/forumtopic/cc0-scraps?page=2
Superpowers (characters) is here: https://opengameart.org/content/superpowers-assets-characters

Formerly in this submission, but removed due to incompatible licenses, there was a better explosion. The explosion is now here: https://opengameart.org/content/denzi-explosion-for-space-war-man

Here is the attribution notice from the Superpowers set:

Creative Commons Zero: http://creativecommons.org/publicdomain/zero/1.0/ Attribution is not required but appreciated. Placing a link to http://superpowers-html5.com/ somewhere would be awesome :)