diff --git a/docs/controls.md b/docs/controls.md
index add8c150..8fd82b9a 100644
--- a/docs/controls.md
+++ b/docs/controls.md
@@ -148,6 +148,8 @@ The PS button is not used. The Controls tab binds and remaps its buttons like an
 
 `NX2NAVI_INPUT_RECORD=<file>` (`input_record` in `nx2navi.ini`) writes the merged input in the same format, one line per button press and per stick segment. The file replays as a script, which makes it the repro to attach to a bug report.
 
+`tools/run_game.py <game folder> --save <save> --seconds <s> --wall <w> [--script <file>] [--shot <png>]` runs the game on a copy of its profile with a save swapped in, under the script (default `tools/input/load_save.txt`: title screen to the first save slot). `<save>` names one of the game's save backups (`profile/save-backup/<time>`; the game keeps the last three) or is a save folder or `.zip` from elsewhere, such as the zipped profile folder of a crash report; a single slot (`slot_NN`) replaces only that slot. The run ends once `<s>` seconds of game time passed after the save loaded, `--shot` saving that frame as a PNG and `--env NX2NAVI_SHOTS=w<from>-<to>:<step>` one every `<step>` seconds of game time along the way (480x270, full size with `NX2NAVI_SHOTS_FULL=1`), or after `<w>` seconds of wall time. `--env NX2NAVI_SHOT_DIR=<dir> --env NX2NAVI_SHOT_AFTER=<s> --env NX2NAVI_SHOT_EVERY=<s>` takes pictures by wall time instead, for a script that never reaches a place where game time counts. On Windows it also takes `build\<ver>` folders and the saves in `build\save-backup`.
+
 `NX2NAVI_TEST_PAD=<lx>,<ly>,<rx>,<ry>` attaches an SDL virtual gamepad at start whose sticks rest at these raw SDL axis values (-32768 to 32767, down is +y), so a drifting or held stick can be tested without a controller: the values go through the gamepad mapping and `NX2NAVI_STICK_DEADZONE` like a real pad's, and `NX2NAVI_INPUT_RECORD` shows what reached the game. `NX2NAVI_TEST_PAD_AT=<ms>` attaches it that long after input starts instead and presses its south button a second later, which tests a controller switched on in play.
 
 ## RenderDoc capture (blocked)
diff --git a/tools/run_game.py b/tools/run_game.py
index f7afec4c..2531c3ad 100644
--- a/tools/run_game.py
+++ b/tools/run_game.py
@@ -1,15 +1,21 @@
-"""Run a build of the game headless on a copy of the user's profile with a backed-up save and scripted input.
+"""Run a build of the game unattended on a copy of the user's profile with a backed-up save and scripted input.
 
-The user's profile (build/profile) is never written: each run copies it to <exe dir>/prof-<tag>, swaps in the save
-backup, and deletes the copy afterwards. The log records how many other nx2navi.exe and ninja.exe processes ran, because
-timings taken next to them are not comparable.
+The profile is never written: each run copies it to <exe dir>/prof-<tag>, swaps in the save backup, and deletes the copy
+afterwards. It is the game folder's own profile when there is one (<exe dir>/profile, a folder make_game.py built), else
+build/profile. The log records how many other copies of the game and of Ninja ran, because timings taken next to them
+are not comparable.
 
     python tools/run_game.py build/v143 --save <backup> --seconds 15 --tag idle --env NX2NAVI_TRACE=perf
     python tools/run_game.py build/v143 --save <backup> --script <input.txt> --seconds 18 --tag fight --quiet \
         --env NX2NAVI_TRACE=perf,sched
+    python3 tools/run_game.py ~/Games/Ocarina --save <report.zip> --seconds 600 --wall 90 \
+        --env NX2NAVI_SHOT_DIR=shots --env NX2NAVI_SHOT_AFTER=40 --env NX2NAVI_SHOT_EVERY=10
 
-<backup> is a folder of build/save-backup; --script defaults to tools/input/load_save.txt (title screen to the first
-save slot), and a recording made with NX2NAVI_INPUT_RECORD replays the same way.
+<backup> is a folder of build/save-backup or of the profile's save-backup (the game keeps its last three saves there),
+or a save folder or .zip from elsewhere, such as a crash report's zipped profile folder; --script defaults to
+tools/input/load_save.txt (title screen to the first save slot), and a recording made with NX2NAVI_INPUT_RECORD replays
+the same way. --wall ends a run whose script never reaches the world clock; NX2NAVI_SHOT_EVERY takes its pictures by
+wall time.
 """
 import argparse
 import ctypes
@@ -19,6 +25,7 @@ import subprocess
 import sys
 import threading
 import time
+import zipfile
 from ctypes import wintypes
 from pathlib import Path
 
@@ -28,21 +35,43 @@ else:
     import fcntl
 
 ROOT = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(ROOT))
+from launcher import saves   # noqa: E402  (Import Saves' search, for a save from elsewhere)
 PROFILE = ROOT / 'build' / 'profile'
 SAVES = ROOT / 'build' / 'save-backup'
 SLOTS = ROOT / 'build' / 'run-slots'
 GPU_LOCK = ROOT / 'build' / '.gpu-run.lock'
 LOCK_OFFSET = 1 << 16   # Windows byte-range lock sits past the holder text, so other processes can still read it
 MAX_RUNS = int(os.environ.get('NX2NAVI_MAX_RUNS', '3'))   # more parallel runs exhaust device memory (16 GB RX 9070)
+# The game's executable as each tool names it: build_game.py, make_game.py on Windows, make_game.py on Linux,
+# build_game.py on Linux
+GAME_EXES = ('nx2navi.exe', 'ocarina.exe', 'ocarina', 'nx2navi')
+NINJA = 'ninja.exe' if os.name == 'nt' else 'ninja'
 
 
 def count(image):
-    out = subprocess.run(['tasklist', '/FI', f'IMAGENAME eq {image}', '/NH'], capture_output=True, text=True).stdout
-    return sum(line.lower().startswith(image) for line in out.splitlines())
+    """Running processes of this executable name."""
+    if os.name == 'nt':
+        out = subprocess.run(['tasklist', '/FI', f'IMAGENAME eq {image}', '/NH'], capture_output=True, text=True).stdout
+        return sum(line.lower().startswith(image) for line in out.splitlines())
+    n = 0
+    for comm in Path('/proc').glob('[0-9]*/comm'):   # the process name, cut to 15 characters
+        try:
+            n += comm.read_text().strip() == image[:15]
+        except OSError:   # the process ended while the list was read
+            pass
+    return n
 
 
-def busy():
-    return count('nx2navi.exe') + count('ninja.exe')
+def busy(game):
+    return count(game) + count(NINJA)
+
+
+def game_exe(exe_dir):
+    for name in GAME_EXES:
+        if (exe_dir / name).is_file():
+            return exe_dir / name
+    sys.exit(f'run_game: {exe_dir} holds none of {", ".join(GAME_EXES)}')
 
 
 def keep_in_background(proc):
@@ -76,11 +105,9 @@ def take_slot():
     while True:
         for i in range(MAX_RUNS):
             f = open(SLOTS / f'slot{i}.lock', 'a+b')
-            try:
-                msvcrt.locking(f.fileno(), msvcrt.LK_NBLCK, 1)
+            if try_lock(f):
                 return f
-            except OSError:
-                f.close()
+            f.close()
         time.sleep(5)
 
 
@@ -137,66 +164,106 @@ def release_gpu_lock(f):
     f.close()
 
 
-def profile_copy(dest, save):
+def save_source(save, profile, scratch):
+    """(folder, slot, names to leave out) of the save to run. A backup named in build/save-backup or the profile's
+    save-backup is a whole save. A folder or .zip from elsewhere (a crash report's zipped profile folder, a game folder,
+    an emulator's save) is searched as the launcher's Import Saves searches it; slot names the one slot it holds, None
+    for a whole save."""
+    if Path(save).name == save:   # a backup's name; a path is searched below
+        for d in (SAVES / save, profile / 'save-backup' / save):
+            if d.is_dir():
+                return d, None, ()
+    path = Path(save).expanduser()
+    if path.is_file() and zipfile.is_zipfile(path):
+        with zipfile.ZipFile(path) as z:
+            if sum(i.file_size for i in z.infolist()) > saves.MAX_BYTES:
+                sys.exit(f'run_game: {path} unpacks to more than a save holds')
+            z.extractall(scratch)   # zipfile leaves out absolute paths and '..' parts
+        path = scratch
+    found, skip = saves.find_save(path)
+    if found is None:
+        sys.exit(f'run_game: {save} is no backup in {SAVES} or {profile / "save-backup"}, and no save folder or .zip')
+    return found, saves._one_slot(found), skip
+
+
+def profile_copy(dest, src, save=None, slot=None, skip=()):
     if dest.exists():
         shutil.rmtree(dest)
-    shutil.copytree(PROFILE, dest)
+    shutil.copytree(src, dest)
     if save:
         users = [d for d in (dest / 'save').iterdir() if d.is_dir()]
         if len(users) != 1:
             sys.exit(f'run_game: expected one save directory in {dest / "save"}, found {len(users)}')
-        shutil.rmtree(users[0])
-        shutil.copytree(SAVES / save, users[0])
+        target = users[0] / slot if slot else users[0]
+        shutil.rmtree(target, ignore_errors=True)
+        shutil.copytree(save, target, ignore=lambda d, names: [n for n in names if Path(d) == Path(save) and n in skip])
+        # a finished or interrupted commit in save-tx would be loaded in place of the save swapped in (fs_host.c)
+        shutil.rmtree(dest / 'save-tx', ignore_errors=True)
 
 
 def main():
     ap = argparse.ArgumentParser(description=__doc__.splitlines()[0])
-    ap.add_argument('exe_dir', type=Path, help='build directory holding nx2navi.exe')
-    ap.add_argument('--save', help='directory name under build/save-backup; default: the profile as it is')
+    ap.add_argument('exe_dir', type=Path, help='build directory or game folder holding ' + ', '.join(GAME_EXES))
+    ap.add_argument('--save', help="the save to run: a backup's name in build/save-backup or the profile's save-backup, "
+                                   "or a save folder or .zip from elsewhere (a crash report's zipped profile folder); "
+                                   'default: the profile as it is')
     ap.add_argument('--script', type=Path, default=ROOT / 'tools' / 'input' / 'load_save.txt', help='NX2NAVI_INPUT_SCRIPT')
     ap.add_argument('--seconds', type=float, required=True,
                     help='game time to run: the run ends once the world clock (game time since the save loaded) passed '
                          'this many seconds (shot is taken of that frame)')
+    ap.add_argument('--wall', type=float, help='stop the game after this many seconds of wall time if it has not ended '
+                                               '(a script that never reaches the world clock)')
     ap.add_argument('--tag', default='run', help='names the profile copy and the log')
     ap.add_argument('--shot', type=Path, help='PNG of the last frame; turns async pipeline builds off (boot.c)')
     ap.add_argument('--log', type=Path, help='default: <exe dir>/logs/<tag>.log')
     ap.add_argument('--env', action='append', default=[], metavar='KEY=VALUE', help='extra environment, repeatable')
-    ap.add_argument('--quiet', action='store_true', help='wait until no other nx2navi.exe or ninja.exe runs (benchmarks)')
-    ap.add_argument('--show', action='store_true', help='open the window on top; by default it opens behind other windows')
+    ap.add_argument('--quiet', action='store_true', help='wait until no other copy of the game or Ninja runs (benchmarks)')
+    ap.add_argument('--show', action='store_true',
+                    help='Windows: open the window on top; by default it opens behind other windows')
     a = ap.parse_args()
 
     exe_dir = a.exe_dir.resolve()
+    exe = game_exe(exe_dir)
+    profile = exe_dir / 'profile' if (exe_dir / 'profile').is_dir() else PROFILE
     log = (a.log or exe_dir / 'logs' / f'{a.tag}.log').resolve()
     log.parent.mkdir(parents=True, exist_ok=True)
     gpu = take_gpu_lock(exe_dir) if a.quiet else None
     try:
         slot = take_slot()
         if a.quiet:
-            while busy():
+            while busy(exe.name):
                 time.sleep(10)
         prof = exe_dir / f'prof-{a.tag}'
-        profile_copy(prof, a.save)
+        scratch = exe_dir / f'prof-{a.tag}.import'
+        profile_copy(prof, profile, *(save_source(a.save, profile, scratch) if a.save else ()))
+        shutil.rmtree(scratch, ignore_errors=True)
 
         env = dict(os.environ, NX2NAVI_ASSUME_FOCUS='1', NX2NAVI_INPUT='none', NX2NAVI_INPUT_SCRIPT=str(a.script.resolve()))
-        if not a.show:
+        if not a.show and os.name == 'nt':   # SDL windows open in front either way
             env['NX2NAVI_BACKGROUND_WINDOW'] = '1'
         for kv in a.env:
             k, _, v = kv.partition('=')
             env[k] = v
-        args = [str(exe_dir / 'nx2navi.exe'), '--profile', str(prof), '--seconds', str(a.seconds)]
+        args = [str(exe), '--profile', str(prof), '--seconds', str(a.seconds)]
         if a.shot:
             args += ['--shot', str(a.shot.resolve())]
         try:
             with open(log, 'w', encoding='utf-8', errors='replace') as f:
-                f.write(f'run_game: others running before: nx2navi.exe {count("nx2navi.exe")}, ninja.exe {count("ninja.exe")}\n')
+                f.write(f'run_game: others running before: {exe.name} {count(exe.name)}, {NINJA} {count(NINJA)}\n')
                 f.flush()
                 start = time.time()
                 proc = subprocess.Popen(args, cwd=exe_dir, env=env, stdout=f, stderr=subprocess.STDOUT)
-                if not a.show:
+                if not a.show and os.name == 'nt':
                     threading.Thread(target=keep_in_background, args=(proc,), daemon=True).start()
-                rc = proc.wait()
+                try:
+                    rc = proc.wait(timeout=a.wall)
+                except subprocess.TimeoutExpired:
+                    proc.kill()
+                    proc.wait()
+                    rc = 124
+                    f.write(f'run_game: stopped at --wall {a.wall:g} s\n')
                 f.write(f'run_game: rc={rc} wall={time.time() - start:.0f}s; others running after: '
-                        f'nx2navi.exe {count("nx2navi.exe")}, ninja.exe {count("ninja.exe")}\n')
+                        f'{exe.name} {count(exe.name)}, {NINJA} {count(NINJA)}\n')
         finally:
             shutil.rmtree(prof, ignore_errors=True)
     finally: