Devour only the words obeying the current spelling rule while it flips and the hunters chase.
The board is filled with words and a spelling rule sits at the top, long-A sounds, silent-E endings, a particular digraph, and so on. Move around eating only the words that fit. The rule flips mid-chase, and hunters track you the whole time, so reading and dodging happen together.
Munch Order turns a maze chase into practice with spelling patterns, where eating the right letters in order is how you spell each word.
Roaming a grid eating only the items that satisfy a stated rule, pursued the whole time, is Word Munchers — MECC, 1985, the first of the Munchers series, designed by R. Philip Bouchard, who also designed The Oregon Trail.
The rules here are phonics rules: long-A sounds, silent-E endings, a particular digraph. The original addition is that the rule flips mid-chase.
Flipping it mid-round is what keeps it a reading exercise. The 1985 original could be cleared by recognising the shape of qualifying words after a few rows; changing the criterion under you means each word has to be sounded out rather than matched against the last one that worked.
Munch Order is an original free browser game built for PlayPendium that turns a dot-munching maze-chase into practice with spelling patterns and phonics. Free to play, no sign-up.