Single-Cell Tycoon

The entire economy is a single number: your cell's Mass. Every organelle you own adds to it each tick and takes away from it each tick, and what you actually keep is the difference. Buying an organelle costs Mass now and raises both flows — production slightly more than upkeep — so growth is not a matter of buying everything you can afford.

• Each purchase raises production and upkeep together. The gap between them is your real income.
• Upkeep scales faster with each level than production does, so the same organelle bought repeatedly gets worse, not better.
• Over-expand and net growth turns negative: Mass falls instead of rising, and reaching zero ends the run.
• Nothing is random. The whole model is deterministic, so a failed run failed because of the order you bought in.

• Desktop: click an organelle card to buy a level
• Phone & tablet: full touch support, tap a card to purchase

• Daily: a seeded run for everyone
• Practice: a random run

• Watch the net rate, not the balance. A large Mass with negative net is a slow loss; a small Mass with positive net is a win that has not arrived yet.
• The dangerous purchase is always the affordable one. Being able to pay the cost says nothing about whether you can carry the upkeep it adds permanently.
• Because upkeep scales faster per level, spreading purchases across different organelles usually beats levelling one of them hard.
• After every buy, check that net growth is still positive before buying again. Two purchases in a row is how most runs tip over.
• If net goes negative there is no recovery mechanic — nothing sells and nothing refunds, so the only fix is not having done it.

An incremental game normally grows by acquisition: buy a generator, the number goes up faster.

Here every organelle both produces and consumes, and what you keep is the difference — so the whole economy is one number, and buying something costs Mass now while raising both flows.

That is closer to how a cell actually works than to how idle games work, and it has a real consequence: because production exceeds upkeep only slightly, buying everything affordable is a losing strategy. Growth becomes a question of margin rather than of accumulation.

Single-Cell Tycoon is an original incremental sim about balancing production against upkeep on a single resource. Free to play in your browser on PlayPendium.

A free, original browser game on PlayPendium. No download, no install.