STUFF THAT REALLY HURTS

WHAT THIS FIXES,
BASICALLY.

  • 01:14 AM RIP

    the modpack updated and now your 200-hour minecraft world won’t load

  • WED 6PM OW

    your co-op friend played “just one quick session” solo and saved over the shared run

  • €15/MO BILL

    paying for a 24/7 server when your group only plays six hours a week

  • SAT STUCK

    host is on holiday — nobody else has the latest valheim world

▮ HOW CHECKPOINT64 WORKS

POINT IT AT A FOLDER.
FORGET ABOUT IT.

Three steps, once. After that you never think about save files again — which is the whole point.

01 · UPLOAD

HIT UPLOAD ↑

Grab a snapshot of your save folder and send a copy to the cloud. Each upload becomes its own labelled version — version one of many.

SOURCE
C:\Users\you\AppData\Local\FactoryGame\Saved\…
↓
v#001 · UPLOADED
02 · AUTO-BACKUP

FLIP AUTO ON

Checkpoint64 checks your save folder every 30 seconds. If something changed, it waits for the game to finish writing, then uploads a fresh version on its own. Only the changed files get sent — the rest is skipped.

WATCHING…
checks every 30 s · uploads only what changed
03 · RESTORE

ROLL IT BACK

Click Versions → on any save to see every backup. Pick one and hit Restore — Checkpoint64 puts the files back and marks that version as the current one. Your 2am mistake becomes a 30-second fix.

v#01212m agoRESTORE
v#0112h ago← HERE
v#010yesterdayRESTORE
▮ A LOOK AT THE APP not a screenshot — live

YOUR LIBRARY
IS A CARTRIDGE SHELF.

Every save is a cartridge. Same game, different runs? Same shelf, different carts.

▮ CHECKPOINT64 · CART SHELF 3 games · 7 carts

Satisfactory

C:\Users\you\AppData\Local\FactoryGame\Saved\…
DEDI
2d · 308 KB
2 files
AUTO ON LOCK U
VERSIONS→
SOLO RUN
5h · 1.2 MB
4 files
SYNCED
VERSIONS→
MOD TEST
3d · 880 KB
3 files
AUTO ─
VERSIONS→

Stardew Valley

%AppData%\StardewValley\Saves\
Y3 SPRING WEDDING
now · 4.1 MB
3 files
SYNCED
VERSIONS→
CO-OP W/ JESS
yesterday · 5.6 MB
5 files
DIRTY JESS
VERSIONS→

Elden Ring

%AppData%\EldenRing\…
NG+3 RL1
11h · 92 KB
1 file
AUTO ON
VERSIONS→
FAITH BUILD
1w · 92 KB
1 file
ERROR
VERSIONS→
▮ FEATURES

WHAT'S IN THE BOX.

Built by people who reload saves a lot. No fluff, no charge per person, no “powered by AI.” Just a save vault that works.

▮ VERSION HISTORY

EVERY UPLOAD IS A VERSION.

Scroll through every backup with file count, size, and what changed since last time. Hit Restore and the files go back on disk, marked as current — no guessing, no “final_v2_REAL” folders.

▮ CO-OP LOCKS

ONE PERSON HOLDS THE WORLD.

Games like Factorio, Valheim, and Satisfactory have one live world at a time. Whoever holds the lock uploads; everyone else downloads. Holder gone quiet? Locks expire on their own, and you can take over — with a warning, and a logbook entry so everyone knows.

▮ ONLY WHAT CHANGED

TINY UPLOADS.

Only the files that changed get uploaded — renamed files cost nothing extra. A 500 MB Minecraft world re-uploads as a few MB after a normal session, not the whole thing. Easy on your internet, easy on your storage.

▮ 60+ GAMES READY

SET UP IN SECONDS.

Presets for 60+ games — four flavours of modded Minecraft, Stardew, Skyrim, Palworld, Elden Ring — plus seven emulators. Pick which files count and skip the screenshots. If it writes saves to a folder, it works.

▮ SHARE CODES

ONE WORLD, WHOLE CROWD.

Running a community world? Mint a join code and anyone holding it can download your save — but never upload over it. Codes are capped and revocable, and read-only visitors don’t use up seats. (Pro)

▮ LOGBOOK

WHO DID WHAT, WHEN.

Every upload, restore, and lock-grab gets written down in your group’s logbook. Handy when your co-op partner blames you for the bad run.

▮ LOGBOOK · LIVE shared with your group

BLAME THE RIGHT PERSON.

Everything anyone in your group does gets written down. Handy for co-op friends, modded servers, speedrun teams, and the classic “wait, who deleted that?”

▮ LOGBOOK 6 events
12m
v#012 you uploaded a new version
→ 8af23901
1h
lock jess claimed the lock
→ 8af23901
1h
v#011 jess auto-backed up
→ 8af23901
3h
lock you released the lock
→ 8af23901
yest
rest kel restored a prior version
→ 2b91f0c4
yest
save you created STARDEW Y3 SPRING
→ 2b91f0c4
live · refresh on visit
▮ FOR STREAMERS & CREATORS one code, every fan

SHARE YOUR RUN
WITH THE WHOLE CHAT.

Got an audience? Hand them your exact save. Mint a read-only share code for any world: your 100% file, a challenge seed, last night’s cursed run. Drop it in your video description, and fans pull a perfect copy into their own library. They download it and play; they can never save over yours.

01 · MINT

MAKE A CODE

Open the save, hit Hosted access, and mint a share code. Cap it at a number of uses, or leave it unlimited. Your call, and it takes a couple of seconds. (Pro plan.)

02 · DROP THE LINK

POST IT ANYWHERE

Put the code in your video description, your Discord, or a stream panel. Fans without the app yet? Share the link instead, and it opens a download page that walks them in.

03 · THEY PLAY IT

FANS GRAB YOUR SAVE

Fans paste the code and your world drops into their own library, read-only. They download and play your exact run, with no way to overwrite it.

▮ HOSTED ACCESS READ-ONLY · PRO
SHARE CODE
RUN-W1TH-ME COPY LINK
∞ USES 218 JOINED NO SEATS USED REVOKE
fans who grabbed it
  • Always read-only, so fans can play your save but never change it
  • Share with as many fans as you like, or cap the code and revoke it whenever
  • Read-only fans don’t use up your team’s seats

Hosted share codes are part of Pro, built for creators, crews, and modding groups.

▮ DITCH THE DEDI do the math

NO MORE 24/7 BOX
YOU BARELY USE.

A dedicated server makes sense if twenty people are on it every night. For the average co-op group — four friends, a couple of evenings a week — you’re renting empty hours. Checkpoint64 covers the part you actually need (the world file, lock-passing, version history) for a one-time payment instead of a forever bill.

€15/MO · WHAT A DEDI COSTS

YOU PAY 24/7.

A rented co-op server is around €15 a month for the popular games — €180 a year, €900 over five. Billed whether anyone logged in this week or not.

~3.6% · WHAT YOU ACTUALLY USE

IT SITS IDLE.

Four friends, two evenings a week, three hours each. That’s about six hours of play out of 168 in the week. Your dedi is empty for the other 96%.

€0/MO · WHAT CHECKPOINT64 COSTS

PAY ONCE. DONE.

One Lifetime payment and the cloud holds the world. Whoever wants to play grabs the lock, plays, and pushes it back. No box to keep warm.

▮ RECEIPT · TYPICAL €15/MO DEDI year one
Server rental, 12 months€180
Hours actually used (4 ppl)~312
Hours nobody touched it~8,448
Spent on idle uptime~€173
What you’d save with Checkpoint64 Lifetime, year two onward €180 / yr
Over five years that’s roughly €900 you keep. Or a new GPU, whichever you prefer. Read the full breakdown →
▮ PRICING

PICK YOUR
CART.

Three ways to play it. Free is actually free — not a seven-day trial. Lifetime is pay-once. Pro is for crews who save together. No charge per person, no surprise fees, no rip-cords. Final prices are still being dialled in — they’ll be posted here before launch.

▮ FREE
€0 no card required
big enough for Stardew, Hollow Knight, or a whole retro library
  • personal space + 1 team
  • 20 MiB cloud storage per space
  • auto-backup + full version history
  • co-op locks + logbook included
  • join as many friends’ teams as you like
GET FREE
★ MOST CARTS
▮ LIFETIME
9.99 one-time, yours forever
pay once — your saves outlive your GPU
  • personal space + up to 3 teams
  • 2.5 GiB storage per space
  • buy direct or on Steam
  • no subscription, ever
  • everything in Free, with room to breathe
GET LIFETIME
▮ PRO
5 monthly, cancel anytime
for crews, streamers, modding groups
  • personal space + up to 5 teams
  • 50 GiB storage per space
  • 25 seats per team (guaranteed minimum)
  • 100 versions / 90 days kept (guaranteed minimum)
  • read-only share codes for your community
  • priority bandwidth (2× the API throughput)
GET PRO

THE EARLY BUILD
IS OUT.
GRAB IT.

Free download, free plan included. Builds publish straight from GitHub — these buttons always point at the newest installer.

release notes & older builds: on GitHub

AVAILABLE ON Steam WINDOWS .msi · v0.5.1 · 8.8 MB MACOS · APPLE SILICON .dmg · arm64 · coming soon LINUX .deb · v0.5.1 · 11.4 MB
▮ FAQ

FREQUENTLY CHECKED.

WHAT COUNTS AS A 'SAVE'?
Whatever your game writes to your hard drive. Checkpoint64 treats the files in a folder as one save and backs them up together. Presets for 60+ games (and seven emulators) set this up for you; for anything else, point at the folder and pick the files yourself.
DO YOU UPLOAD WHILE THE GAME IS RUNNING?
Yes, carefully. Checkpoint64 never locks your save files. It checks the folder every 30 seconds; if the game is mid-save it waits for things to go quiet and tries again — no broken files, no stutter. The app naps between checks, so you won’t notice it while playing.
WHAT IF MY CO-OP PARTNER OVERWRITES MY UPLOAD?
They can’t, on purpose. Only the person holding the lock can upload. To push their version they have to take the lock first — which warns you, and goes in the logbook for all to see. Worst case, your version is one Restore away in the history.
DO I STILL NEED A DEDICATED SERVER?
For most groups, no. The whole point of a dedicated server is keeping your world online when the host’s PC is off. Checkpoint64 covers about 90% of that for a one-time fee: whoever wants to play grabs the lock, plays their session, then pushes the save back. A typical co-op group saves €120–€240 a year compared to renting a 24/7 server that sits idle 18 hours a day.
DOES THIS WORK FOR EMULATORS OR CONSOLE SAVES?
Emulators, absolutely — RetroArch, Dolphin, PCSX2, DuckStation, PPSSPP, RPCS3, and Cemu all have presets, so your save states finally get real version history. Console saves only work if you can get them onto a PC first. The app itself runs on Windows, macOS (Apple Silicon), and Linux.
WHAT DOES IT COST?
The free plan is real and stays free: 20 MiB, your own space plus one team. Lifetime is a one-time payment — 2.5 GiB per space, up to 3 teams, bought direct or through Steam. Pro is for big crews: 50 GiB per space, 5 teams, 25 seats each, read-only share codes. No charge per person on any tier. Final numbers land with v1.
CAN I USE IT TODAY?
Yes — the early build is free to download right now for Windows, macOS (Apple Silicon), and Linux. v1 and the Steam release are coming later this year.
WHO CAN SEE MY SAVES?
Your teammates — and only the ones you invite. They see your display name, never your email. And your data stays yours: export everything as a zip whenever you like, and deleting your account actually deletes it (after a 7-day cooling-off period, in case of 2am regret).