diff --git a/sketch.js b/sketch.js
index db8583d..0022e40 100644
--- a/sketch.js
+++ b/sketch.js
@@ -165,17 +165,17 @@ function startGame(full_start, update_objects) {
             if (i == 0) {
                 collectables[0] = {
                     x: 600,
-                    y_pos: floorPos_y,
-                    size: 50,
+                    y: floorPos_y,
+                    size: 75,
                     isFound: false,
                 };
             } else
                 collectables[i] = {
                     x: collectables[i - 1].x + 50 + 150 * random(0.5, 1),
-                    y_pos: gameChar.possibleGroundPosY[
-                        random(0, gameChar.possibleGroundPosY.length)
+                    y: gameChar.possibleGroundPosY[
+                        ceil(random(0, gameChar.possibleGroundPosY.length))
                     ],
-                    size: 50,
+                    size: 75,
                     isFound: false,
                 };
         }
@@ -473,10 +473,10 @@ function checkCanyon(t_canyon) {
 function checkCollectable(t_collectable) {
     if (
         !t_collectable.isFound &&
-        collectable.y_pos == gameChar.getCurGroundPosY() &&
+        collectable.y == gameChar.getCurGroundPosY() &&
         dist(
             t_collectable.x,
-            t_collectable.y_pos,
+            t_collectable.y,
             gameChar.x,
             gameChar.y - gameChar.x_step * 4
         ) <
@@ -528,7 +528,8 @@ function drawCanyon(t_canyon) {
     fill(palette.canyon_river_color);
     rect(t_canyon.x - t_canyon.width / 2, floorPos_y, t_canyon.width, height);
 
-    if ((frameCount % 2) == 0) {
+    // Waves animation.
+    if (frameCount % 2 == 0) {
         PointX = random(
             t_canyon.x - t_canyon.width / 2 + 5,
             t_canyon.x + t_canyon.width / 2 - 5
@@ -541,7 +542,7 @@ function drawCanyon(t_canyon) {
     }
     stroke(palette.canyon_river_wave_color);
     strokeWeight(5);
-    for (k=0; k < t_canyon.points.length; k++) {
+    for (k = 0; k < t_canyon.points.length; k++) {
         line(
             t_canyon.points[k][0],
             t_canyon.points[k][1],
@@ -553,13 +554,22 @@ function drawCanyon(t_canyon) {
     pop();
 }
 function drawCollectable(t_collectable) {
+    push();
+    // animating the coin's jiggle
+    a = 0.1; b = 3; c = 0.2; d = 2; // a - vert. intensity, c - hor. intensity, b - vert. speed, d - hor. speed
+    t_collectable.y -= sin(frameCount*a)*b;
+    t_collectable.x += sin(frameCount*c)*d;
     stroke(0.2);
     fill(palette.coin_outer);
-    ellipse(t_collectable.x, t_collectable.y_pos, 0.7 * t_collectable.size);
+    ellipse(t_collectable.x, t_collectable.y, 0.7 * t_collectable.size);
     fill(palette.coin_middle);
-    ellipse(t_collectable.x, t_collectable.y_pos, 0.6 * t_collectable.size);
+    ellipse(t_collectable.x, t_collectable.y, 0.6 * t_collectable.size);
     fill(palette.coin_inner);
-    ellipse(t_collectable.x, t_collectable.y_pos, 0.5 * t_collectable.size);
+    ellipse(t_collectable.x, t_collectable.y, 0.5 * t_collectable.size);
+    // restoring coin's coordinates to preserve game logic
+    t_collectable.y += sin(frameCount*a)*b;
+    t_collectable.x -= sin(frameCount*c)*d;
+    pop();
 }
 function drawClouds() {
     for (i = 0; i < clouds.length; i++) {