
Idle sci-fi RPG where combat actually matters. Crash-landed on an alien world, you rebuild through five skills, melee/ranged/void-magic combat, and a server-wide world boss. Progress keeps going while you're AFK. Solo, co-op, or faction raids. Free to play. No pay-to-win.
Revenue comes from in-game items and microtransactions, which our price-based model doesn't estimate. The player count below is how many people own it, not what they spent.
About
You crash-landed on an alien world. The ship is scrap, the planet is hostile, and progress doesn't stop when you step away. Lost Vessel is a sci-fi idle RPG with real combat, deep crafting, and a slow climb back toward the stars - playable in thirty-second bursts or five-hour grinds. Free to play, no pay-to-win, ever.
Five skills pull you back from zero: salvage the wreckage, mine the planet, harvest alien flora, fabricate weapons and armor, analyze every sample for the next tier of everything. Each skill compounds the others - endgame materials require components from all five.
A melee / ranged / void-magic triangle where every enemy has a weakness. Crits, armor pierce, dodges, reflects, instant kills on legendary gear. Weapons degrade with use and break permanently if you let them. Fight through zones with escalating difficulty all the way to a dimensional rift at the endgame.
Equipment starts common and works up through rare, epic, and legendary at the Forge. Legendaries aren't just bigger numbers - 5% instant-kill, 25% skill-speed auras, damage reflection. Loadouts let you switch a combat kit, a gathering kit, and a backup with one tap. Durability matters. Repair matters. Choices matter.
Assemble I.D.L.E. from parts and you get a second skill queue running in parallel. He's sarcastic, he complains constantly, and he runs on Voidshine - a cross-skill endgame fuel that needs materials from combat, biology, and fabrication. Keep him fed and he grinds while you sleep.
The Nexus Drift is the co-op hub: 2-4 player expeditions, a server-wide world boss, and specialist jobs that pay weekly tokens. Raiders is the PvP side: pick a faction, raid other players, defend your colony, fight for territory. Both are completely optional - solo players lose nothing.
Offline progression is genuinely idle - skills work while the browser or Steam client is closed. A 17-track mastery system grants permanent passive bonuses every time you hit a milestone. Ship augments are a 110-level talent tree for fine-tuning your build. No energy timers, no stamina bars, no premium currency. Just progression.
Optional cosmetic supporter packs let you back the game and show off - exclusive titles, name effects, and profile flair. Cosmetic only, never power, never an advantage.
COMING TO STEAM.
A free demo dropped in May 2026 so you can try it before the full launch. Wishlist to get the exact date the moment it goes live.

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Stats
Languages: English**languages with full audio support
Engagement
Reviews
Themes across 77 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
Lost Vessel is an incremental game. There are many in the field, so what sets this one apart? Well... • It's free to play, and not pay-to-win (purchases are cosmetic.) • The dev is active and regularly updates (sometimes with spamming frequency) • It has a cute little bot mascot (who requires 'shine to keep fueled) • There's still stuff to do after completing all the base game content (end/post-game material) • It has an in-game chat (with active players) The chat is the best part, imo. These kind of games can get mind numbing in short order, but having something to read while the idling to craft/collect resources makes a big difference. Normally I'd check out of game like this in 2-3 days, but here I am a month later and still enjoying it. Maybe you will too!
I've played a lot on the web version, so my play time here isn't exactly accurate. It's definitely one of the better idle games. Early on you need to micromanage what you do to craft items to help you progress, and later you'll be getting resources for permanent upgrades and to craft legendary items (1% chance). The fact resources are always useful (except analysis... although there is a use for it that's in beta) makes it quite fun, since you never really waste time as long as you're doing something. The game is also completely free, which is honestly cool. There are supporter packs with some cosmetics (pretty much just for your profile and chat visuals) but they are there mainly to support the dev.
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This and every other Pro feature is free until October 20, 2026. A free account is all it takes.
Hours played at review time, across 77 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
Good game. No one way to 'win', nothing you need hidden behind paywall, truely the only things you can buy are cosmetics. After the first few hours, you can play it in background, checking in every so often. Easy to work out how long you can leave it and not lose time progressing. Plenty to explore and the DEV is active and developing other games.
Awesome game. Highly addictive. Frequent updates from an active and passionate dev. What more is there to ask for? I can see myself playing this for a very long time. Hope to see more from this developer!
It's a nice idle game with plenty of depth, with a friendly community, and done by a single developer.
The base game is interesting. There are a few dozen versions of this same game, mostly in the hacking idle side of things. This takes the hacking version and puts it as a crash landed ship. Has good incremental systems. Could use the graphics of some kind other than black and blue squares. Unfortunately I can't recommend this game for two reasons. 1. While the developer is active in the game chats, or mods or whoever it is, they are way to invested and bias about the game. There is currently an event running in game for launch. Says 5 hours and 10 hours of active play time, typically in an idle game that means it's open not in closed mode. I have 30 hours on record on steam in my library. In game for the event i have 3 hours and 9 minutes of played time according to it. Over this week it's been open and going both with my assistance and while out of the house. Which leads to point 2. When asked the simple question of why is it off. The dev,mod, whoever, stated it was a design choice and that the event only tracked active time with keystrokes. This is baffling. There is zero reason for an idle game to monitor keystrokes for activity. This means it could potentially monitor keystrokes when game is active but not primary window. When this was brought up to the dev,mod,whoever, their response is the game is free to play and basically go play something else if you don't like their rules. He also stated this game isn't an idle game just partially idle. This is from the description on the store page. "Lost Vessel is a sci-fi idle RPG" and "playable in thirty-second bursts or five-hour grinds" there is literally nothing for you to click on that last longer than 30 seconds. It's pick a research, pick a skill, start combat repeat over and over. The only way to get active time is if you are using it as a chatroom. Which then raises other questions in todays world. I can see why the game is getting blasted in the forums and other areas for the AI UI and other clear quick design choices. Makes you wonder if the whole F2P is just to sell keystroke heatmaps to marketing companies.
Really well made game, great Dev and community. Amazing it is free and no Pay to Win! Recommended for sure.
I am having a lot of fun with this one so far. It has the standard idle game features with a lot of room for active gameplay if wanted.
A fun idle game! I'd played quite a few of this style and this one is a very solid game. I find it to be more intuitive than many that are out there - even though there is a lot, it is introduced fairly slowly and it all so far has been intuitive so I've never felt lost. Some upgrades for convenience are locked behind a small time gate but I don't really have an issue with that (such as auto - healing). The mission system is pretty good at leading you through what you need to be aiming for. I admittedly have put it on pause and am just doing my own thing and it's still fun which says a lot about how well the game is built. The only real complaint I have so far is that tools disappear when durability hits 0 instead of letting me repair them. Pretty minor overall, and maybe auto-repair comes later in the game anyway. For free - you can't really go wrong, absolutely worth giving a shot. I'll update later if my thoughts change after I pour more time into it.
Lost Vessel is a free-to-play sci-fi idle RPG developed and published by Lazy Frog Games that blends survival, automation, and role-playing progression into a surprisingly expansive experience. Set on a dangerous alien world after a catastrophic spacecraft crash, the game casts players as the lone survivor tasked with turning a hopeless situation into an opportunity for growth. Rather than focusing on constant action, the gameplay emphasizes careful planning, resource management, and gradual technological advancement. Every milestone feels connected to the larger goal of repairing your capabilities and eventually escaping the hostile planet, giving even routine tasks a meaningful sense of direction. One of the game's strongest qualities is its layered progression system. Players develop multiple skills that revolve around gathering resources, dismantling wreckage, mining valuable materials, researching alien discoveries, and crafting increasingly sophisticated equipment. None of these activities exist in isolation, as each supports the others and encourages players to diversify their efforts instead of repeatedly farming a single resource. This interconnected design creates satisfying long-term progression where every session contributes toward unlocking stronger gear, better technology, and more efficient production. Offline advancement further strengthens the experience by allowing progress to continue even when the game is not actively running, making it equally enjoyable for casual players and those who prefer extended optimization sessions. Combat adds another layer of depth beyond the typical idle RPG formula. Encounters feature different attack styles, including melee, ranged weapons, and mysterious void-based abilities, each offering advantages against specific enemy types. Instead of relying purely on inflated statistics, battles reward thoughtful equipment choices and adapting to enemy weaknesses. The loot system introduces increasingly powerful equipment with unique legendary effects that can significantly alter combat performance, while durability mechanics require players to think carefully about maintaining valuable gear. The ability to save multiple equipment presets also makes transitioning between exploration, resource gathering, and combat far more convenient without unnecessary inventory management. Lost Vessel also distinguishes itself through its broader gameplay systems that extend beyond solo progression. One of the standout features is I.D.L.E., a robotic companion that eventually becomes an additional source of productivity by performing independent tasks alongside the player. Supporting this companion requires specialized resources gathered from several gameplay systems, reinforcing the title's emphasis on interconnected mechanics. Multiplayer content expands the experience even further through cooperative expeditions, massive world boss encounters, optional faction-based PvP battles, and territory control activities. Importantly, these competitive features remain optional, allowing players who prefer a purely solo adventure to enjoy the full progression loop without feeling pressured into competitive play. The game's long-term progression appears designed to reward dedication rather than spending. Numerous mastery paths provide permanent account-wide improvements, while an extensive ship enhancement system offers meaningful customization that supports different playstyles. Instead of locking progress behind premium currencies or restrictive energy mechanics, Lost Vessel emphasizes consistent play and strategic planning. Cosmetic supporter packs exist for players who wish to support development, but they avoid providing gameplay advantages, helping preserve a fair environment for the community. Combined with accessible hardware requirements and a clean science-fiction presentation, the game offers an inviting package for players looking for a deeper idle experience. Although the sheer number of systems may initially seem overwhelming, especially for newcomers to incremental RPGs, the gradual pace allows players to learn mechanics naturally over time. The balance between active management and passive progression creates an engaging loop where every improvement feels earned. For players who enjoy games centered on long-term character growth, crafting, strategic equipment choices, and steady progression rather than constant action, Lost Vessel delivers an experience that stands apart from many traditional idle games. Its ambitious combination of survival mechanics, automation, multiplayer content, and player-friendly monetization gives it a strong foundation and considerable long-term appeal. Rating: 7/10
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