The collection is played primarily from a side-scrolling perspective. Players move through linear stages, fight enemies, overcome environmental obstacles, solve simple puzzles, and use alien abilities to reach new areas or defeat bosses.

The three included games use different stories and alien rosters drawn from their respective television-series settings. Progression comes from completing stages, advancing the story, unlocking or accessing additional transformations, and improving the use of each alien's movement or combat abilities.

Learn which alien forms are best suited to each situation instead of relying on one transformation. Fast or agile forms help with movement, while stronger forms are more effective against armored enemies and bosses.

Explore each stage before moving on when possible. Look for alternate routes, useful pickups, and touchscreen interactions, and practice enemy patterns so that health is preserved for boss encounters.