Let's be honest: you were probably curious about Sackboy: A Big Adventure when it launched alongside the PlayStation 5, but not so much that you were willing to buy that instead of Demon's Souls or Miles Morales. Thankfully, you no longer have to pay extra to indulge that curiosity. Sony has made the LittleBigPlanet spinoff (also available on PS4) free to all PlayStation Plus members between April 4th and May 1st.
Sackboy is decidedly different than the core franchise. Where Little Big Planet is a 3D-enhanced side-scroller that revolves more around environment interaction and creativity, this game is a 3D platformer that revolves around its namesake hero's acrobatics. They all share a relatively uncommon co-op mechanic, though. Up to four players can tackle stages together, and some segments require teamwork to move forward. This may be an ideal game to play with your kids.
You have options if Sackboy doesn't strike your fancy. The newly launched build-and-raid game Meet Your Maker is also available for free on PS Plus this April, as is the hand-drawn RPG Tails of Iron. Both freebies are available for PS4 and PS5.
These new offerings won't make you regret a PS Plus Extra or Premium subscription. If you pay for those tiers, you recently received high-profile games like Uncharted: Legacy of Thieves Collection and Tchia. Still, it's nice to know that you can add one more marquee title to your library with very little effort.