Life Crystal adds life crystals and life fruits from Terraria. Life crystals spawn in open areas underground. Life fruits spawn in lush caves. They continue to spawn until you've reached max health (life crystals stop spawning once you've used 10 of them).

Life crystals must be broken with a pickaxe. Life fruits can be broken with anything.

Consuming a life crystal grants +2 max health (1❤️), up to 20 (10❤️). Consuming a life fruit grants +1 max health (½❤️), up to 10 (5❤️). Life fruits can't be used until you have used 10 life crystals.