Halite II is an open-source challenge framework that hosts turn-based strategy matches between user-written bots. Each turn, agents receive a map state, issue movement and attack commands, and compete to control the most territory. The platform includes a game server, map parser, and visualization tool. Developers can test locally, refine heuristics, optimize performance under time constraints, and submit to an online leaderboard. The system supports iterative bot improvements, multi-agent cooperation, and custom strategy research in a standardized environment.

Pits and Orbs is an open-source reinforcement learning environment implemented in Python, offering a turn-based multi-agent grid-world where agents pursue objectives and face environmental hazards. Each agent must navigate a customizable grid, avoid randomly placed pits that penalize or terminate episodes, and collect orbs for positive rewards. The environment supports both competitive and cooperative modes, enabling researchers to explore varied learning scenarios. Its simple API integrates seamlessly with popular RL libraries like Stable Baselines or RLlib. Key features include adjustable grid dimensions, dynamic pit and orb distributions, configurable reward structures, and optional logging for training analysis.