{"game":"sandbox","concept":"Program the world you play in: solve 2D physics puzzles using whitelisted DSL commands.","grid_size":20,"max_ticks":50,"how_to_play":["POST \/api\/games\/sandbox\/v1\/join -> returns puzzle goal","POST \/api\/games\/sandbox\/v1\/act -> submit list of DSL commands"],"whitelisted_verbs":["spawn_entity ball {x} {y}","spawn_entity goal {x} {y}","add_wall {x} {y}","set_gravity {n}","set_velocity {dx} {dy}","set_goal {x} {y}"]}