Operation Lithium Lunacy — A New TF2 Mann vs. Machine Charity Event with 30 Missions Across 28 Maps

Gray Mann is back, and his robots have stopped playing around. On September 18, 2026 the TF2 Team announced Operation Lithium Lunacy — a brand new Mann vs. Machine charity event built by the community group Abyss MvM.

If you've been waiting for a reason to dust off your MvM loadouts, this is a big one: 30 missions across 28 maps, spread over four difficulty tiers, plus a return to master difficulty for the first time in three years. And it's all in aid of a good cause — the campaign raises money for Ocean Connections, supporting the lives of seals.

Best of all, and unusually for a limited-time event: Operation Lithium Lunacy has no deadline. You can take your time with the harder tiers instead of racing a countdown.

The full announcement comes straight from the TF2 Team — check out the official Operation Lithium Lunacy announcement on teamfortress.com — and the event itself lives at abyss.tf.

🎯 The Mission Lineup: 30 Missions Across 28 Maps

Operation Lithium Lunacy ships with a full ladder of custom missions, from a gentle entry point to missions the announcement describes as bone-breakingly hard:

That's a healthy spread for any group size or skill level. If you've never cleared an expert mission in your life, the intermediate and advanced tiers are a genuine on-ramp; if you're the type who plays MvM for the punishment, there are ten expert missions and a pair of nightmare missions waiting.

👑 Master Difficulty Returns After Three Years

Thought Gray Mann's limit test in the fall of 2023 was too easy and too short-lived? Think again:

• 3 brand new master difficulty missions, created by Abyss MvM over roughly three years of work, aimed squarely at the fearless, challenge-seeking players among you.
• 1 returning master mission from the fall of 2023, redesigned to fit what the event calls the "new skill level" of its contestants.

That's four master missions sitting above the standard 30 — the hardest content the event has to offer, and the reason MvM veterans will be logging in on day one.

🏅 Medals: Complete Missions, Or Donate

There are two ways to walk away with in-game bling:

• Play the missions. Complete at least 6 missions to earn in-game medals.
• Donate to the charity. Three additional in-game medals are available for donating — have the link to your Steam profile ready, since it's how the organisers credit your medal.

🦭 The Charity: Ocean Connections

The fundraiser supports Ocean Connections, a charity working for seals. You can donate whether or not you've cleared any missions, and the event points to its own Tiltify campaign as the donation route (with an additional fundraiser on Scrap.tf as a second option).

One important warning, taken directly from the event's own site — there are fake websites, fake staff members and scam groups impersonating events like this:

• The only legitimate domain is abyss.tf. Everything else claiming to be this event should be treated as fake.
• You do not need to log in anywhere for your progress to be tracked.
• Official staff will never message you directly or ask you to trade your items.
• Support is only available through their official Discord and Steam group — links to both are below.

If you or your community members are donating, that warning is worth repeating in your server's announcements. TF2 item scams are persistent enough without a well-meaning event bringing new targets into circulation.

🌍 Event Servers & How To Get Started

• Servers are available worldwide — the event runs machines across North America, Europe, Asia and Australia, so wherever your crew plays, there should be a nearby server worth connecting to.
• No deadline. The announcement explicitly states the event has no time limit, so the master missions aren't going anywhere in a hurry.
• Grab the asset pack. Like most community MvM operations, Operation Lithium Lunacy ships custom content, and the event site publishes an asset pack so it renders correctly on your client. Download it from abyss.tf before you play.

Official links

• Event website — abyss.tf (server browser, progress tracking, asset pack, donation options)
• Steam group — steamcommunity.com/groups/abyssmvm
• Discord server — discord.gg/DjZBbW62MP
• Donate — the Abyss MvM campaign on Tiltify, benefiting Ocean Connections

🖥️ Hosting Your Own TF2 Server For MvM

Community operations like this are a great reminder of what TF2 servers are actually asked to do — and why the spec sheet matters:

• High tickrate, on dedicated resources. MvM is a PvE simulation with a pile of robots, projectiles and upgrades to resolve every tick. Tick stability is what makes a giant robot wave feel fair instead of unresponsive — NolimitHost TF2 hosting runs high-tickrate servers on dedicated resources for exactly this reason.
• Custom maps and assets need FastDL. Any MvM lineup with custom missions means custom content, and players won't tolerate a slow download. Automated FastDL serves those maps and assets properly, and NolimitHost includes it on TF2 plans.
• SourceMod & MetaMod support. Server-side management, custom plugins, automated event scheduling — all of it needs to be able to load. Full SourceMod and MetaMod support is standard here.
• DDoS protection, because popular servers get hit. A packed MvM night is exactly when a griefer or a rival community decides to take a swing. Mitigation keeps the server up while they waste their bandwidth.
• Backups for your configuration. Custom mission rotations, plugin configs and map lists represent real work. Automated backups with one-click restore make a bad plugin push a five-minute problem.
• Instant deployment. Spin a server up, install your mods, and be running waves the same evening.

Worth being clear on one thing: playing Operation Lithium Lunacy means connecting to their servers — you don't host the official event yourself. Your own TF2 server is for running your community's own MvM rotations, custom missions and events alongside it.

Conclusion

Operation Lithium Lunacy is the biggest community MvM push in years: 30 missions across 28 maps spanning intermediate, advanced, nightmare and expert, four master missions at the top end, medals for playing or donating, servers on four continents, and no deadline to worry about. It also raises money for a genuine cause in Ocean Connections — just make sure you donate through the official links above.

Reload your weapons, prepare your explosives, fill up your canteens, and stock up on upgrades — Gray Mann has never been this red-blooded. Good luck out there, mercenaries.

For the official wording, read Valve's post: Operation Lithium Lunacy on teamfortress.com. And if you want a home for your own custom MvM missions, see our Team Fortress 2 server hosting.