헬로 히어로: 라이온하트 - 수집형 키우기 is an engaging RPG where players join Leo on his adventure to power up in a new world. This idle RPG offers diverse companions and growth opportunities through various combinations. Players can expect generous rewards, including daily carrot gifts worth 20,000 won just by logging in, along with SS companion rewards and event prizes. Combat and progression happen seamlessly in this stress-free idle RPG, allowing for continuous growth without the hassle.

Players can collect companions, build their own teams, and discover the benefits of having numerous allies. Unused companions also contribute to enhancing abilities, encouraging players to gather as many as possible. Additionally, every companion possesses at least one costume, with more costumes leading to increased abilities, providing an added layer of customization and power boost.