2 player strategy game of Alchemical Elemental Geometries
First place,    Heavy Games category,    2017 Board Game Geek 2 Player Print and Play Contest
PnP info and links Module at

Sky Pirates and the Quest for Helium is ready for playtesting
a lighter, 2-6 player, take that pick-up-and-deliver game
last revised (wording for clarity about dune hexes) 05Jan2018

Rules PnP pages has many indie games for solo Hearts and other card games has many games including multiplayer is great for beginning gamers for online Diplomacy has assorted games also has a wide assortment for real human hexmap wargames

Google search for "online free games"