Upload Simulator Silicon

You are uploading a file. The file is an image, or music, or a video, or eventually a game, and the upload takes so long that you build an entire tech empire to make it go faster. EnigmaDev Studios released Upload Simulator Silicon in September 2023 as the expanded sequel in its upload-idle series, a sci-fi incremental where the numbers never stop growing and the destination is ascension as an entity that controls the laws of the universe.

What the loop feels like

You upload a file, credits trickle in, and the credits buy hardware: CPU, GPU, network connection, each upgrade speeding the next upload. Generators overclock the setup beyond its ratings. Hacks raise your hack level and accelerate everything. That's Upload Simulator Silicon.

You craft a module with random attributes, slot it, and discover your entire build rearranges around its trade-offs. You open the research tree, unlock a tech tier, and the automation you were doing by hand quietly becomes automatic. That is the moment the game has been building toward, and it arrives on a different clock for everyone.

How it actually works

The system that gives Silicon its personality is the module craft, openly borrowed from action RPGs. More than twenty modules drop with random qualities and statistical trade-offs, and stacking them produces genuinely different builds, a loot-grind texture almost no incremental attempts. The hack system is the second signature: an interactive sub-game managing hack levels and speeds, with the unusual option to disable hacking entirely in exchange for passive performance, an explicit truce between active and idle players baked into the design. Around those, the genre machinery runs deep: file formats with distinct secondary modifiers, hardware upgrades scaling credits and processing, overclocking generators, robots doing the work, a multi-tier research tree, and ascension pushing you across multiple universes with exponentially scaled power. Community estimates put the core content at thirty to forty hours, with the ascension layers extending it for anyone still climbing.

Where it stumbles

Reception is positive in broad terms, with one recurring complaint: the start is slow. The early hours are a grind of small numbers and manual uploads, and players expecting immediate automation bounce off before the game opens up; the community specifically notes it takes longer to reach automation than the original Upload Simulator did. Most players see the majority of core content within forty hours, and the alternative universes beyond the wall do not shift the loop enough to warrant endless replays for everyone. Niche bugs and quality-of-life friction persist, with some endgame transitions historically requiring workarounds like disabling robots and active uploads to avoid crashes. And the value question is fair: the genre's deepest games are free, so a paid idler needs to justify itself, which Silicon does with build variety rather than sheer depth.

Playing it today

On Steam for Windows and Linux, published by EnigmaDev Studios, with cloud saves and achievements, and a demo on the store page. No mobile ports surfaced in our checks, so the uploading stays a desktop habit. For the series' origin, the catalog's upload-simulator entry covers the original.

The verdict

A patient, customisable sci-fi incremental that rewards the people who survive its slow opening with real build variety. One of the better pure-number idlers on Steam, provided you bring your own patience.