Hello there, you fabulous people! 
A game called Unrailed! is free to own forever.
As long as you claim your copy of the game before 3pm UTC on the 11th August.
Game Description:
Unrailed! is a chaotic online and couch co-op multiplayer railroad construction game where you work together with your friends as a team to build a train track across endless procedurally generated worlds. Master encounters with its inhabitants, upgrade your train and keep it from derailing!
Gather resources and craft tracks to extend your railroad to prevent your train from reaching the end. But watch out - there is only one tool of each type. Co-operation and co-ordination of your team is essential to survive this increasingly challenging journey!
Have a fun gaming session!