diff --git a/TODO.md b/TODO.md
index 7d4705a..fa55369 100644
--- a/TODO.md
+++ b/TODO.md
@@ -11,4 +11,4 @@
 - [ ] Fix z-fighting of monsters.
 - [ ] Add exploding animation of monsters.
 - [ ] Add audio settings (music & sound volume).
-- [ ] Hearts must be saved as well for resume.
\ No newline at end of file
+- [X] Hearts must be saved as well for resume.
\ No newline at end of file
diff --git a/cmd/tins2021/appcontext.go b/cmd/tins2021/appcontext.go
index e51b68d..392bef4 100644
--- a/cmd/tins2021/appcontext.go
+++ b/cmd/tins2021/appcontext.go
@@ -54,7 +54,7 @@ func (app *appContext) Play(ctx ui.Context) {
 	level := tins2021.NewLevel()
 	level.Randomize(0, numberOfStars)
 
-	app.Score.Current = tins2021.Score{}
+	app.ResetCurrentScore()
 	app.show(ctx, newLevelControl(app, ctx, level))
 }
 
@@ -74,11 +74,22 @@ func (app *appContext) PlayNext(ctx ui.Context, controller *levelController) {
 func (app *appContext) PlayResume(ctx ui.Context) {
 	level := tins2021.NewLevel()
 	level.Score = app.Score.Current.Score
+	level.Lives = app.Score.CurrentLives
 	level.Randomize(app.Score.Current.Difficulty, numberOfStars)
 
 	app.show(ctx, newLevelControl(app, ctx, level))
 }
 
+func (app *appContext) ResetCurrentScore() {
+	app.Score.Current = tins2021.Score{}
+	app.Score.CurrentLives = 0
+}
+
+func (app *appContext) SetCurrentScore(level *tins2021.Level) {
+	app.Score.Current = tins2021.NewScore(level.Score, level.Difficulty+1)
+	app.Score.CurrentLives = level.Lives
+}
+
 func (app *appContext) show(ctx ui.Context, control ui.Control) {
 	app.setView(control)
 	if _, ok := control.(*levelController); ok {
diff --git a/cmd/tins2021/levelcontroller.go b/cmd/tins2021/levelcontroller.go
index 5f74bed..124f246 100644
--- a/cmd/tins2021/levelcontroller.go
+++ b/cmd/tins2021/levelcontroller.go
@@ -91,7 +91,7 @@ func (r *levelController) updateHighscore() bool {
 	if highscore {
 		r.app.Score.Highscores = highscores
 	}
-	r.app.Score.Current = tins2021.Score{} // reset score
+	r.app.ResetCurrentScore()
 	return highscore
 }
 
@@ -101,7 +101,7 @@ func (r *levelController) Handle(ctx ui.Context, e ui.Event) bool {
 		switch e.Key {
 		case ui.KeyEscape:
 			if r.Level.StarsCollected == r.Level.Stars {
-				r.app.Score.Current = tins2021.NewScore(r.Level.Score, r.Level.Difficulty+1)
+				r.app.SetCurrentScore(r.Level)
 			}
 			r.app.ShowMainMenu(ctx)
 		}
@@ -116,7 +116,7 @@ func (r *levelController) Handle(ctx ui.Context, e ui.Event) bool {
 		case *ui.KeyDownEvent:
 			switch e.Key {
 			case ui.KeyEnter:
-				r.app.Score.Current = tins2021.NewScore(r.Level.Score, r.Level.Difficulty+1)
+				r.app.SetCurrentScore(r.Level)
 				r.app.PlayNext(ctx, r)
 			}
 		}
diff --git a/score.go b/score.go
index 6d2f83e..5d2ca83 100644
--- a/score.go
+++ b/score.go
@@ -57,8 +57,9 @@ func (s *Score) Validate() bool {
 }
 
 type ScoreState struct {
-	Current    Score
-	Highscores Highscores
+	Current      Score
+	CurrentLives int
+	Highscores   Highscores
 }
 
 func LoadScores() (ScoreState, error) {