NucleoSynthetica starts you with a single atom and tasks you with progressively fusing elements to generate planets and construct massive orbital installations. The game layers discovery and expansion mechanics as you unveil the universe's hidden nature, offering branching paths toward building either a flourishing civilization or triggering dormant cosmic threats. It appeals to players who enjoy incremental progression wrapped in hard sci-fi world-building and meaningful long-term choices.
About this game
Start with a solitary atom in the cosmic void. Fuse mysterious elements, birth unknown worlds, build orbital megastructures, and uncover the deepest secrets of creation! Will you foster a thriving paradise of life, or awaken ancient perils lurking in the dark?
Players, last 60 days
Peak 2 · Low 0
Daily peak concurrent players, sampled once a night from Steam.
The Shop could stay hidden after you closed it with Esc. You could press B or click the Shop button, but nothing would appear. Version 4.92.10 fixes that path. The Shop also clears a leftover hidden state when you open it again. We checked repeated purchases and reopening with the Back button, B and Esc, including after saving and restarting. Your existing saves are kept. If you still run into a problem, please tell us your game version, language and what you pressed just before it happened in Steam Discussions. That helps us reproduce it.
A clearer start The opening guide stays available while you work on its current goal. You can close it and reopen it when you want. Hydrogen counts, EP balance, and income information reflect your running game. The guide does not change prices or grant resources. Fixed the guide's reopen button disappearing when the Shop was opened and closed quickly. Corrected mixed-language secret-reaction messages and construction failure explanations. Material names in those explanations now follow your selected language. See the game in action The store now has a new gameplay trailer lasting just over one minute and six gameplay screenshots, showing reactions, planet formation, terraforming, construction, turret defense, and the skill tree. Later scenes were recorded in prepared test checkpoints to show those systems; they are not a timed start-to-finish run. Getting started Keep matter inside the Core's energy ring to earn EP, follow the current opening goal, and drag one H onto another H to make H₂. Open the Shop with B, the Codex with C, and your current objective with Q. There is no five-minute deadline. If something does not work as expected, please report the game version, language, and steps to reproduce it in the Steam discussions. A screenshot helps; please do not post passwords or personal information. Thank you for playing NucleoSynthetica.
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