Something strange is happening in Gravity Falls! In Li'l Gideon Shrinks Back, Mabel and Dipper have been reduced to tiny size by Li'l Gideon's latest invention, and Grunkle Stan has vanished. Players must explore the Outside Mystery Shack, the Basement, and the Inside Mystery Shack, uncovering secrets and avoiding danger. Each sibling offers unique abilities, and magical crystal shards help shift their size to solve puzzles, reach hidden items, and outsmart oversized enemies.
Choose Mabel or Dipper, then use the arrow keys to move and jump, and the spacebar to activate crystal shards that change your size. Jump on enemies like caterpillars and cockroaches to eliminate them. Collect giant gummy koalas as you advance, but stay alert—some enemies will cost you lives. In boss stages, use timing and clever movement to defeat possessed allies and finally tickle Li'l Gideon into defeat. Three lives, shrinking powers, and courage will guide you home!