What is Screeps?
Screeps means “scripting creeps.” It’s an open-source sandbox MMO RTS game for programmers, wherein the core mechanic is programming your units’ AI. You control your colony by writing JavaScript which operate 24/7 in the single persistent real-time world filled by other players on par with you.
It was fun while it lasted, and probably the best thing is that I really feel like my Javascript and Node fluency has gone through the roof compared to what it was.
Screeps is a fun game and has a unique angle to it. Using actual programming instead of a pseudo-language actually allows the players to focus on better coding habits and makes practice fun.
We use Screeps as a key part of our recruitment process at fleetster. Screeps is useful because it throws candidates into an unknown environment where the number of "right" solutions are very numerous.