Hearts are measure of "health" in LEGO Worlds. Hearts generally represent 2 "hit points" as a measure of how much damage can be taken by a Character, Creature, Vehicle or the Player themselves. Players start with 4 Hearts, and can purchase more from the Trader for 
100,000 studs each, up to a max of 20 hearts.
Hearts do not regenerate over time (unless the Player has selected a Character with "Regeneration" such as the Vampire or Dragon Wizard). Health can be removed by attacks from other Players, Characters, Creatures or Vehicles, or by damage from the environment, such as by drowning in water, or burning in lava or fires. The Player's own character's punches will deal only 1/2 heart damage per hit. Using a character that deals more damage will not increase this. Slime, by the way, is instant-death for just about everybody..
Most Characters and Creatures in LEGO Worlds are vulnerable to damage from every weapon, from simple punches to a blast from the powerful Lava Gun. Some Characters and Creatures, however, are invulnerable to most weapons, and therefore their vulnerability must be exploited by using a special weapon type. This will be indicated by the colour of the Heart(s) above the Character or Creature's head. Note that when selecting a Character with an invulnerability from the Character Customizer, the Player does NOT receive their invulnerability.
When riding Creatures, the Player's hearts will be replaced by those of the Creature. This does not confer any special invulnerability. Be careful, because doing this in Multi-player mode may cause the Player's hearts to be permanently lowered to 4!
While Vehicles may show Silver-coloured hearts in multi-player modes, they do not confer nor have any special invulnerabilities.
| Heart Colour | Creature Type | Vulnerable to |
|---|---|---|
 |
Normal | All Weapons |
 |
Supernatural & Undead | All Black Weapons |
 |
Werewolf | All Silver Weapons |
 |
Monster / Hero | All Gold Weapons |
 |
Vampire & Spider Lady | All Wooden Weapons |
 |
Dragons & Dragon Wizard | All Crystal Weapons |
Weapon damage may be slightly different when attacking a creature vulnerable to that damage type. Additionally, certain explosive weapons (specifically the Bazooka and Megazooka) will damage all creatures, regardless of invulnerability.
Notes[]
- Prior to title update 3, each heart was worth 4 hit points