diff --git a/inc/conf.h b/inc/conf.h
index 62885b3..6082fc3 100644
--- a/inc/conf.h
+++ b/inc/conf.h
@@ -11,3 +11,4 @@
 #define AIR_RESISTANCE      0.02f
 #define GRAVITY             0.2f
 #define JUMP_SPEED          -4.0f
+#define JUMP_BREAK          3
diff --git a/inc/player.h b/inc/player.h
index 5eebc2c..75b11b6 100644
--- a/inc/player.h
+++ b/inc/player.h
@@ -1,9 +1,12 @@
 #pragma once
 #include "vec.h"
 
+enum AirState { AS_NEUTRAL, AS_RISING, AS_BREAKING };
+
 struct Player {
 	struct Vec pos;
 	struct VecF spd, rem;
+	enum AirState air_state;
 };
 
 void player_init(struct Player *);
diff --git a/src/player.c b/src/player.c
index 8d52c90..60cd907 100644
--- a/src/player.c
+++ b/src/player.c
@@ -18,6 +18,7 @@ player_init(struct Player *p)
 	p->pos.x = TILE_SIZE;
 	p->pos.y = TILE_SIZE;
 	reset_speed(p, 1, 1);
+	p->air_state = AS_NEUTRAL;
 }
 
 void
@@ -28,6 +29,7 @@ player_update(struct Player *p)
 	const int k_right = input_down(K_RIGHT);
 	// const int k_up = input_down(K_UP);
 	// const int k_down = input_down(K_DOWN);
+	const int k_jump = input_down(K_JUMP);
 	const int kp_jump = input_pressed(K_JUMP);
 	const int dir_x = k_right - k_left;
 
@@ -38,10 +40,28 @@ player_update(struct Player *p)
 
 	/* air resistance & gravity */
 	p->spd.y *= (1 - AIR_RESISTANCE);
-	p->spd.y += GRAVITY;
+	p->spd.y +=
+	    (p->air_state == AS_BREAKING) ? (GRAVITY * JUMP_BREAK) : (GRAVITY);
+
+	/* air state machine */
+	/* state is set to AS_RISING when jumping */
+	switch (p->air_state) {
+	case AS_RISING:
+		if (!k_jump) p->air_state = AS_BREAKING;
+		/* fallthrough */
+	case AS_BREAKING:
+		if (p->spd.y > 0) p->air_state = AS_NEUTRAL;
+		break;
+	case AS_NEUTRAL:
+	default:
+		break;
+	}
 
 	/* jump */
-	if (on_ground && kp_jump) p->spd.y = JUMP_SPEED;
+	if (on_ground && kp_jump) {
+		p->spd.y = JUMP_SPEED;
+		p->air_state = AS_RISING;
+	}
 
 	player_move(p, update_rem(p));
 }