The problem
Inventory limits in games are usually a counter. You hit twelve slots, you drop a potion, nothing about the room changes. Players who love tight puzzle design have no small game where the limit is the whole puzzle. Designers asking how to build around a body that physically holds two things get answers in forum threads, not something playable. Two Hands makes the hands the board: every action spends one, and the room is built so that every solution is an ordering problem about what you are holding when.
Why now
Short rules-first puzzlers are doing well on itch.io and mobile, and players share a single clever constraint more readily than a big game. Browsers also run a canvas or SVG puzzle with synthesised sound and no install, so a one-minute room can be passed around as a link. Level design talk about "verbs with costs" is common right now, and this is a concrete, playable example of one.
What it is
A one-screen room, drawn in two inks. You have a left and a right hand. Keys, stones and torches take one; a crate takes both. Turning a key and pushing the exit open each need a free hand. Plates, gates, lava and darkness force you to decide what to put down and where. The demo has five hand-built rooms, each solvable in under a minute, with reset and no undo. It does not have a level editor, saved progress, more than five rooms or any scoring beyond a move count for this session.
Who it's for
Players who enjoy Baba Is You, Stephen's Sausage Roll or Snakebird style single-rule puzzlers, and designers studying constraint-based design. It is not for players who want action, story or progression systems, and it is not a brain-training product for people who want streaks and daily reminders.
How it makes money
Not yet, and that is the right answer for a rules prototype. If the rooms hold up, the honest options are a small premium price for a forty-room set, pay-what-you-want on itch.io, or a portal licence. Ads would work against a game whose appeal is a calm, exact rule, so they are rejected. The first test is whether players finish room five and ask for more.
Go to market
Post the playable link to r/gamedesign, where the question that inspired it was asked, and to the puzzle-game corners of itch.io and Hacker News as a "one rule, five rooms" demo. Game designers forward it as a teaching example of a costed verb. Offer a room-sharing code later so those same designers can send each other their own hand-conflict rooms, which is the habit that would carry growth.