warriorjs

Each level presents a new challenge requiring the player's warrior to sense its environment, make decisions, attack enemies, rescue captives, and reach the exit all controlled by a JavaScript function that the player writes and iterates on.

The game teaches algorithmic thinking, state management, and decision-making logic through an engaging, game-like progression.

As the warrior explores each floor, it can look in different directions, measure its own health, check for enemies and walls, attack, walk, rest to recover health, rescue captives, and pivot in different directions.

Players must write logic that handles all these situations correctly managing health thresholds, prioritizing between attacking and healing, tracking positional state, and dealing with edge cases like surrounded positions or low-health escapes.

Higher floors introduce ticking time limits, ranged enemies, and more complex floor layouts that push the sophistication required.

WarriorJS is open-source under the MIT license and is played entirely in the browser or via command line, with no installation required beyond Node.js.

It is used in programming education, coding bootcamps, and technical interview preparation as a way to practice JavaScript logic and algorithmic thinking in an entertaining context.