Moon Sweepers

Negative reviews raise this more than any other problem. Dozens of reviewers say they had bought every tool, vehicle, upgrade and building at or below 1% of the moon cleaned: "After only a few hours, I had already unlocked 100% of the available upgrades and structures, while having cleaned only around 1% of the Moon." From then on, the late game means saving $20,000 at a time for another J.O.O.N.A.S. robot, building the same small factory at the next station and waiting, often overnight or for days. Money piles up into the millions with nothing to spend it on. One player who finished put it this way: "Unlock all the upgrades in 4 hours, Leave computer running for 90 hours so the robots can clean the moon for you." Dozens of reviewers, positive ones among them, say the game should have launched as early access, and several plan to come back after the planned December update. A small but vocal group argues that a huge, slow task is the point and that complainers expected the wrong genre.

Finishing takes hundreds of J.O.O.N.A.S. robots, and players report that the game struggles to run them. Reviews describe frame rates falling to the teens or single digits, stutter on high-end cards, RAM usage near 30 GB and a host's PC working flat out: "By the end the frame rate was cleaning harder than I was." The robots draw separate complaints. They leave sectors partly cleaned, wander to random spots, freeze near the player or bunch up on terrain. Some players say a few sectors stayed stuck at 98 to 99% with no visible dust, so they could not reach 100% at all. In launch week, robots also stopped working when the player was far away; later reviews say a patch fixed this, though a few say it still happened to them.

Players describe aggressive snapping with no grid option, belts that will not line up, stairs and walls with mismatched heights, roofs that need all four walls, and splitters and mergers that cannot be raised: "Litterally everything intersects with everything all of the time." With no blueprints or copy tool, the same buildings and solar panels have to be placed one at a time at every base. Buildings do not show which side is input and which is output, and before the move tool arrived, a misplaced building could only be sold back at a 25% loss. Deleting a belt dumps every capsule on the ground, and they then have to be picked up one by one. A minority of players say the system was fine for them.

The four stations have a fixed number of deposit ports, belts have one speed, and the processing buildings cannot be upgraded, so players who push the automation find that extra robots stop adding speed past a few hundred: "You can build hundreds of robot cleaners, but most will be idle while they wait for an open collector." They ask for faster belts, buildable sell points, bigger capsules and storage silos. Some found workarounds, such as placing unconnected capsule catchers as extra sinks or using Nexus mods.

Upgrading a brush usually costs about as much as the next, better tool, so incremental-game fans find the sensible move is to skip upgrades and early vehicles entirely: "Well that was dumb, I should have just saved a little more for the next one." Players list upgrades they see as pointless, such as faster depositing when depositing is already instant, a six-slot tool belt when only two slots are useful, and vehicle suction upgrades with no visible effect. Hand tools become obsolete as soon as the first vehicle arrives.

About 15% of negative reviews say the game looks or plays as if it was AI-generated or "vibe-coded". They point to odd upgrade descriptions and numbers, three different names for the hex sectors, a distorted player model and systems that look untested, and some say the AI use goes beyond the translation the Steam page discloses. A few say they refunded or would not have bought it had they known. Some positive reviewers reject the claim or say it makes no difference to their fun, and one notes the game ships in 19 languages.

Crashes come up most in launch week, including some on AMD graphics cards, a memory leak reported on Linux and a few full PC shutdowns. Those reports thin out in later weeks. Other bugs persist across the two weeks: capsules stuck in a machine's input that can only be cleared by rebuilding it, production lines that stop with "could not pack a capsule", stray dust capsules landing on sand belts, and the player being launched into the air after touching a capsule or a building edge. A small number of reviews report lost saves, bugged achievements (several cite the 10,000-deposit and money achievements) and a game that forgot a player owned their fully upgraded vehicle.

Players who left their world public describe strangers joining, deleting factories, spending the shared money (sometimes into debt) and leaving. One player summed up the pattern as "someone joins, deletes all of your production and conveyor belts, then logs out." There are no build permissions, logs or rollback, so the advice in these reviews is to play solo or with friends only. For a few negative reviewers, this was the main reason for the thumbs down.

Solar panels are the only power source, the lunar night is long and gives no countdown, and the panels store too little to carry factories through it. Players ask for batteries, power lines or another generator.

Motion sickness from the camera following every tool swing shows up mostly in reviews written in the first hour or two ("Couldn't even lock the camera. Made me sick."), and a couple of those players say they refunded or are thinking about it. Others report hard-coded keys with no rebinding, a problem for left-handed players and alternate keyboard layouts. Players also mention a vehicle camera that keeps snapping back behind the car, no first-person or zoom option while driving, hold-to-sweep with no toggle (one reviewer with tendonitis raised this) and unfinished controller support.