Recognition · medium difficulty

Code Compare practice game

Find the matching code before time runs out. Practice 10 timed rounds free with no account required.

• A target code is shown at the top of the screen
• Find the matching code before each round timer expires; the limit falls from 10 to 3 seconds
• For spoken codes or additional processing time, enable Untimed spoken-response mode in Session settings or Game options
• Scan each code systematically for a single-character difference
• Balance speed with accuracy as the visible round timer shortens