Basis.png by MarianoGNU

Thanks!

Actually, I was asking about the license exactly because I wanted to use it with the Basis I’ve compiled. With your water, it looks like this:

(Upd.: this is Basis revision 2b)

Still need a replacement for swamp. xD

Attribution is as follows:
surt’s Town Tiles (CC0): opengameart.org/content/town-tiles
surt’s Forest Tiles (CC0): opengameart.org/content/forest-tiles
Basis by MarianoGNU (WTFPL): Basis.png by MarianoGNU
MrBeast’s Worldmap/Overworld Tileset (CC-BY): opengameart.org)]
16x16 Tiles by Ogrebane (CC0): opengameart.org/content/16x16-tiles
16x16 indoor rpg tileset: the baseline by Stephen Challener aka Redshrike (CC-BY): opengameart.org)]
MrBeast’s cave tileset (CC-BY): opengameart.org)] — only cliffs,
NES CC0 Graphics #2 (CC0) by Gwes: opengameart.org/content/nes-cc0-graphics-2 – 1 tile only, red roof