Heavenly Bodies

Heavenly Bodies is a physics puzzle-sim that hands you direct control of a 1970s cosmonaut's arms and asks you to do basic tasks like assembling equipment or moving objects while zero gravity turns everything into a slow-motion disaster. There are no weapons, no builds, no tech trees. The core loop is pure kinesthetic problem-solving: you move the left arm with one input, the right arm with another, and your body drifts, rotates, and collides with everything around it. It sounds simple. It is not. The gap between what you want to happen and what actually happens is exactly where the game lives. From a systems perspective, the physics engine is doing serious work here. Each scenario introduces a distinct environmental constraint - solar panels that need precise positioning, astronaut suits that need to be wrestled onto uncooperative bodies, telescope arrays that require careful threading through tight spaces. The simulation is consistent enough that you can actually develop spatial intuition over repeated attempts. There is a learning curve, and it rewards players who treat each level as a mechanical puzzle rather than a comedy sketch. That said, the comedy sketch reading is also valid, especially in local co-op where two players share one cosmonaut body across two controllers. That mode alone justifies the purchase for anyone who has a couch and a willing friend. Where Heavenly Bodies earns its 95% positive rating on Steam is in how it respects the player's time across both solo and co-op runs. Levels are self-contained, progress is checkpoint-based, and the game never overstays its welcome in any single scenario. The art direction - chunky Soviet-era aesthetic, warm analog palette - is cohesive and genuinely pleasant to look at. The soundtrack earns its keep too. On the downside: there is no mod support, no sandbox mode, and the solo experience loses some of the emergent chaos that makes co-op memorable. Replayability is limited once you have solved each scenario, and there is no procedural generation to extend the mileage. For strategy and sim players specifically, this is an unusual recommendation but a defensible one. The decision-making here is spatial and real-time rather than macro-level, but the satisfaction of finally threading a solar panel through a hatch after eleven failed attempts maps directly onto the feeling of solving a tricky logistics problem in a city builder. The AI does not exist as an opponent - this is entirely a player-versus-physics game - but the physics model is coherent enough to function as a fair ruleset. If you are someone who finds satisfaction in mastering a system, the mastery loop here is genuinely rewarding even if the system is "how do arms work in space." Heavenly Bodies is a compact, well-executed physics sim that delivers most of its value in co-op but remains a worthwhile solo experience for players who enjoy tactile, iteration-based puzzle design. It is not deep in the grand-strategy sense, but it is precisely as deep as it needs to be. Diego, Scout Team