diff --git a/test/benchmark/__init__.py b/test/benchmark/__init__.py
new file mode 100644
index 00000000..5f890e85
--- /dev/null
+++ b/test/benchmark/__init__.py
@@ -0,0 +1,127 @@
+import time
+
+
+class TimeIt:
+    def __init__(self, name: str, time_logger=None):
+        self.name = name
+        self.logger = time_logger
+        self.timer = None
+        self.end_timer = None
+
+    def __enter__(self):
+        self.timer = time.perf_counter()
+        return self
+
+    @property
+    def dif(self):
+        return self.end_timer - self.timer
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        if not self.end_timer:
+            self.end_timer = time.perf_counter()
+        if self.logger:
+            self.logger.info(f"{self.dif:.4f} seconds in {self.name}.")
+
+
+if __name__ == "__main__":
+    import argparse
+    import logging
+    import gc
+    import collections
+    import typing
+
+    # makes this module runnable from its folder.
+    import sys
+    import os
+    sys.path.remove(os.path.dirname(__file__))
+    new_home = os.path.normpath(os.path.join(os.path.dirname(__file__), os.pardir, os.pardir))
+    os.chdir(new_home)
+    sys.path.append(new_home)
+
+    from Utils import init_logging, local_path
+    local_path.cached_path = new_home
+    from BaseClasses import MultiWorld, CollectionState, Location
+    from worlds import AutoWorld
+    from worlds.AutoWorld import call_all
+
+    init_logging("Benchmark Runner")
+    logger = logging.getLogger("Benchmark")
+
+
+    class BenchmarkRunner:
+        gen_steps: typing.Tuple[str, ...] = (
+            "generate_early", "create_regions", "create_items", "set_rules", "generate_basic", "pre_fill")
+        rule_iterations: int = 100_000
+
+        if sys.version_info >= (3, 9):
+            @staticmethod
+            def format_times_from_counter(counter: collections.Counter[str], top: int = 5) -> str:
+                return "\n".join(f"  {time:.4f} in {name}" for name, time in counter.most_common(top))
+        else:
+            @staticmethod
+            def format_times_from_counter(counter: collections.Counter, top: int = 5) -> str:
+                return "\n".join(f"  {time:.4f} in {name}" for name, time in counter.most_common(top))
+
+        def location_test(self, test_location: Location, state: CollectionState, state_name: str) -> float:
+            with TimeIt(f"{test_location.game} {self.rule_iterations} "
+                        f"runs of {test_location}.access_rule({state_name})", logger) as t:
+                for _ in range(self.rule_iterations):
+                    test_location.access_rule(state)
+                # if time is taken to disentangle complex ref chains,
+                # this time should be attributed to the rule.
+                gc.collect()
+            return t.dif
+
+        def main(self):
+            for game in sorted(AutoWorld.AutoWorldRegister.world_types):
+                summary_data: typing.Dict[str, collections.Counter[str]] = {
+                    "empty_state": collections.Counter(),
+                    "all_state": collections.Counter(),
+                }
+                try:
+                    multiworld = MultiWorld(1)
+                    multiworld.game[1] = game
+                    multiworld.player_name = {1: "Tester"}
+                    multiworld.set_seed(0)
+                    multiworld.state = CollectionState(multiworld)
+                    args = argparse.Namespace()
+                    for name, option in AutoWorld.AutoWorldRegister.world_types[game].options_dataclass.type_hints.items():
+                        setattr(args, name, {
+                            1: option.from_any(getattr(option, "default"))
+                        })
+                    multiworld.set_options(args)
+
+                    gc.collect()
+                    for step in self.gen_steps:
+                        with TimeIt(f"{game} step {step}", logger):
+                            call_all(multiworld, step)
+                            gc.collect()
+
+                    locations = sorted(multiworld.get_unfilled_locations())
+                    if not locations:
+                        continue
+
+                    all_state = multiworld.get_all_state(False)
+                    for location in locations:
+                        time_taken = self.location_test(location, multiworld.state, "empty_state")
+                        summary_data["empty_state"][location.name] = time_taken
+
+                        time_taken = self.location_test(location, all_state, "all_state")
+                        summary_data["all_state"][location.name] = time_taken
+
+                    total_empty_state = sum(summary_data["empty_state"].values())
+                    total_all_state = sum(summary_data["all_state"].values())
+
+                    logger.info(f"{game} took {total_empty_state/len(locations):.4f} "
+                                f"seconds per location in empty_state and {total_all_state/len(locations):.4f} "
+                                f"in all_state. (all times summed for {self.rule_iterations} runs.)")
+                    logger.info(f"Top times in empty_state:\n"
+                                f"{self.format_times_from_counter(summary_data['empty_state'])}")
+                    logger.info(f"Top times in all_state:\n"
+                                f"{self.format_times_from_counter(summary_data['all_state'])}")
+
+                except Exception as e:
+                    logger.exception(e)
+
+    runner = BenchmarkRunner()
+    runner.main()