ONHOLDNEWS · every Tuesday
Science Games Weekly
We're onholdlab, a small studio making web games. What we care about most is rules that are interesting in themselves. So every week we round up the new games that put real science or technology into how they play.
What we pick and how we write
The rules are the sciencePhysics, math, code, circuits, biology, astronomy… it has to be in the rules, so you play by understanding it. Sci-fi themes or pretty visuals alone don't count.
You can see what you'd be doingWe don't use other people's screenshots. Each game gets a concrete scene in words and a diagram of the mechanic we draw ourselves.
Clear on whether you can playPlatform, price, languages, and whether it is open now. If we couldn't confirm it, we say “to be checked” instead of guessing.
Fewer, deeper3–5 games a week, each written in depth. We also list where we searched and found nothing that qualified.
All issues
- 2026-11-10 · Issue 2Build a computer from scratch: arrows, assembly, marbles, and a letter written in equationsLogic Arrows, PlayASM, Number Machine: Math Factory, marblebuilds, Message From Aliens
- 2026-11-03 · Issue 1Minesweeper by code, an 1890 punch card, and an AI world that driftsThe Miner Was Replaced, HOLLERITH, The Telegraphist, Stall Catchers 10th-anniversary Catchathon, Genie 4