To make your toy crane machine more challenging for older kids, several adjustments can be made. First, consider reducing the claw's grip strength or tension. This can often be done via an internal adjustment screw or potentiometer on the claw mechanism, making it harder to secure prizes. Shortening the play timer increases pressure, forcing quicker decisions. Strategically placing prizes flat or in hard-to-reach corners adds difficulty. For machines with programmable settings, decreasing the win probability or enabling a "must-win" cycle after more plays enhances challenge. Adding barriers inside the glass or using smaller, smoother prizes also tests skill. Always consult your machine's manual for specific adjustment points and ensure modifications are safe and reversible. These tweaks transform a simple game into a engaging test of precision and patience for older children and teens.