Lost Vessel brings its idle sci-fi RPG combat game into a bigger fight across Steam Deck and Linux via Windows. Thanks to the steady creative work of developer Lazy Frog Games. Which is live today on Steam. Lost Vessel sounds like the kind of idle sci-fi RPG combat built for players who like progress bars, late-night Steam Deck sessions, and one more upgrade before sleep. It starts with solo grinding, then pulls that progress into shared co-op goals instead of leaving you alone with a screen full of numbers.

The Idle Grind Gets Company

Independent studio Lazy Frog has announced that Lost Vessel launches today. It will be free-to-play on Steam Deck and Linux. It will also run in any web browser at lost-vessel.com. That browser part matters. So does the handheld part. For players, the confirmed route is through Proton. That means the source does not confirm a native version. It also does not confirm verification  or specific performance results. Still, the idea is clear. You can start in a browser tab, move to Steam, then keep going on Deck. One account carries your progress across devices. That is the dream for idle games. Your run keeps breathing while your hardware changes.

Lost Vessel Wants More Than Bigger Numbers

Most idle games hit a strange wall. At first, everything feels great. You gather, craft, upgrade, and watch numbers climb. Then the magic fades, and the gameplay starts to feel like a lonely spreadsheet. Lost Vessel is trying to dodge that trap. Its early gameplay is built around deep solo progress. You work through skills, crafting, combat paths, mastery tracks, prestige, and body-mod implants. Then that progress feeds a co-op endgame. That is the hook. Your quiet solo grind does not just make you stronger. It pushes you toward other players.

Why Steam Deck Players Should Care

Idle games can be perfect Steam Deck titles. They fit quick checks, fit couch sessions. They fit that late-night glow where you only meant to play for five minutes. Lost Vessel leans into that rhythm. Guest accounts let you jump in without a signup wall. You can register later if you want to secure your progress. That is smart design. No one wants to make an account before they know the release has teeth. Let me touch the buttons first. Let me see the loop. Then I will decide if I care. The gameplay also promises one save across browser and Steam. For Deck owners, that could make Lost Vessel easy to keep in rotation. Start on a desktop. Check progress from a browser. Continue on Deck. Simple. Clean. Useful.

A Solo Developer With A Big Co-op Idea

Lost Vessel is being built by Simon Haberl, founder of Lazy Frog. The release was made by a solo developer over months of weekly updates with a live community. That detail gives the project some weight. This is not a faceless store-page concept. It has been shaped in public, week by week. Haberl also explains the title’s core idea in plain terms. “Every idle game I loved eventually left me alone with a spreadsheet,” said Simon Haberl, founder of Lazy Frog. “I wanted to find out if all that solo progression could pour into something you do with people instead. That's the whole reason Lost Vessel exists.” That quote lands because it gets the genre. Idle games are not bad because they are passive. They are fun because small gains stack into big plans. The problem comes when those plans stop meaning anything. Lost Vessel wants the grind to end somewhere social.

Lost Vessel - Idle Scifi RPG - Trailer

Skills, Combat, Forges, And Weird Body Mods

The gameplay is not pitching itself as a tiny clicker with a sci-fi skin. The solo side includes multiple gathering and crafting skills. Combat uses melee, ranged, and void styles. There is also a forge system with rare legendary procs. That means crafting can spike into special results, not just predictable stat bumps. There are mastery tracks, prestige through Reawakening, and implants for body modification. Daily bounties are deterministic, so players know what they are chasing. The release also includes hundreds of achievements. That matters for performance-focused players in a different way. Not performance as in frame rate, since no benchmarks were shared. More like performance of time. A good idle RPG should respect the minutes you spend inside it. The stated design is simple: you benefit if you idle, but you come out ahead if you play actively. That is the balance every idle game chases.

Co-op Endgame Is The Real Pitch

The endgame is where Lost Vessel sounds most interesting. Solo progress feeds shared expeditions, a server-wide world boss, and faction construction projects. Those projects unlock new content for everyone. That last part is the key. It means your progress can help a larger goal. Not just your build. Not just your inventory. The whole server can move forward. There is also opt-in Faction War. Players can fight for territory without punishing invasions that wreck their progress. That sounds like the right call. PvP can add energy, but forced losses can poison an session fast. Lost Vessel is aiming for competition without grief.

Free Forever, But Not Pay-To-Win

Lazy Frog says Lost Vessel will be free forever. The full release is free. Every system is included. There are no paywalls, and no quality of life features locked away. Optional Supporter Packs are cosmetic-only. The studio also says there is no pay-to-win, ever. That is a big claim in free-to-play. It also puts pressure on the gameplay to stick the landing after launch. Idle games live or die by trust. Once players feel the grind was bent around a store, the spell breaks. For now, the promise is clear. Lost Vessel wants support from players who like the title, not power sales from players who feel trapped.

The Linux Details We Know So Far

Here is the honest Linux angle. Lost Vessel is confirmed for Steam Deck. It is also playable through any web browser at lost-vessel.com. The announcement mentions Linux via Prton, which points toward compatibility rather than native support. A native build has not been confirmed in the source. Proton support details have not been confirmed either. There is no confirmed Verified status, no Vulkan note, and no shared system requirements or frame-rate data. That does not kill the story. It just means players should read the platform wording carefully. The good news is that Steam Deck is named directly. The web browser version also gives desktop players another possible path. As always, the real test will come at launch.

Lost Vessel Could Be One To Watch

small doodles of broken Vessel mems

-its probably shitty Maxwell brain. Seriously Vessel prevents the gay

-always need to speak in third person but wont because it sounds to childish

-long winded, probably using big words I can barely spell