A game called Sail Forth is free to own forever. As long as you claim it before 16:00 UTC on the 18th January.
Sail a fleet of customizable ships across an ocean whose ancient depths have swallowed the key to the mysterious past. Befriend fishfolk to expand your boat crews, take up arms against petulant pirates, and chart a course across an expansive watery world.
NOTE! There seems to be an issue with the Epic Store at this time. The game is currently no longer showing as free. Try again later.