Last Control
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An n-back test, bay feed. The line is two units ahead of your memory.
Unit class marks roll past the terminal, one at a time. Flag the one that matches the mark you saw two units ago — that is the 2-back. The cadence is fixed; the feed does not wait, and it does not slow down. Catch the repeats, hold your nerve on the lures. Free, in the browser, no sign-up.
No download. No account. Twenty-four units at a fixed cadence. Wrong flags are counted. Everything is.
Hold the last two marks in your head. When the mark on the terminal matches the one from two units back, flag it before the feed advances. Nothing matches on the first two units.
The full audit runs in the game. Free. Anonymous until you claim a seat.
Frequently filed questions
Is this n-back test free?
Yes. Free, browser-playable, no sign-up, no download. Nothing is filed off this page unless you choose to continue into the game.
What is an n-back test?
A working-memory drill. A stream of items appears one at a time, and you flag the one that matches the item you saw N steps earlier. This is a 2-back: you flag every item that matches the one two positions back. It is the standard task used to load and measure working memory, and the dual-n-back is its best-known training variant. Here the stream is a bay feed: unit class marks rolling past, one at a time.
Is it made for adults?
Yes. No cartoons, no balloons. A single terminal feed, a fixed cadence that does not wait for you, and a protocol that counts both the matches you catch and the ones you call wrong. The stream is dealt fresh on every load, so no two runs repeat.
Is this a real cognitive or medical assessment?
No. It is a game. The rating is a game score for entertainment — it does not measure intelligence, diagnose anything, or stand in for any professional assessment.
What is Last Control?
A multiplayer browser game in which you run a base of workers under a protocol that audits everything — including you. The full 60-second cognitive audit at game.last-control.com is the entrance.