Screeps is described as 'Learn to code JavaScript by playing game. This game claims to be the world’s first MMO strategy sandbox game for programmers' and is an app in the development category. There are more than 25 alternatives to Screeps for a variety of platforms, including Web-based, Windows, Linux, Self-Hosted and SaaS apps. The best Screeps alternative is exercism, which is both free and Open Source. Other great apps like Screeps are LeetCode, HackerRank, Codewars and WarriorJS.
The Deadlock Empire is a programming game that teaches locking and concurrency. The skills you need are your intelligence, cunning, perseverance and the will to test yourself against the intricacies of multi-threaded programming in the divine language of C#.
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