diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..602c9e8
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,12 @@
+---
+repos:
+  - repo: https://github.com/jessp01/pre-commit-golang.git
+    rev: v0.5.5
+    hooks:
+      - id: go-fmt
+      - id: go-imports
+      - id: go-vet
+      - id: go-lint
+      # - id: go-critic
+      - id: go-ineffassign
+      - id: shellcheck
diff --git a/board.go b/board.go
index 0e35533..c16936d 100644
--- a/board.go
+++ b/board.go
@@ -3,8 +3,8 @@ package main
 import (
 	"math/rand"
 
-	"github.com/faiface/pixel"
-	"github.com/faiface/pixel/pixelgl"
+	pixel "github.com/gopxl/pixel"
+	"github.com/gopxl/pixel/pixelgl"
 )
 
 // isTouchingFloor checks if the piece that the user is controlling has a piece
@@ -80,7 +80,7 @@ func (b Board) checkCollision(s Shape) bool {
 	for i := 0; i < 4; i++ {
 		r := s[i].row
 		c := s[i].col
-		if r < 0 || r > 21 || c < 0 || c > 9 || b[r][c] != Empty {
+		if r < 0 || r > 21 || c < 0 || c > BoardCols-1 || b[r][c] != Empty {
 			return true
 		}
 	}
@@ -137,7 +137,7 @@ func (b *Board) checkRowCompletion(s Shape) {
 			r := s[i].row
 			emptyFound := false
 			// Look for empty row
-			for c := 0; c < 10; c++ {
+			for c := 0; c < BoardCols; c++ {
 				if b[r][c] == Empty {
 					emptyFound = true
 					continue
@@ -161,7 +161,7 @@ func (b *Board) checkRowCompletion(s Shape) {
 // deleteRow remoes a row by shifting everything above it down by one.
 func (b *Board) deleteRow(row int) {
 	for r := row; r < 21; r++ {
-		for c := 0; c < 10; c++ {
+		for c := 0; c < BoardCols; c++ {
 			b[r][c] = b[r+1][c]
 		}
 	}
@@ -184,11 +184,12 @@ func (b *Board) fillShape(s Shape, val Block) {
 // (ie activeShape).
 func (b *Board) addPiece() {
 	var offset int
-	if nextPiece == IPiece {
+	switch nextPiece {
+	case IPiece:
 		offset = rand.Intn(7)
-	} else if nextPiece == OPiece {
+	case OPiece:
 		offset = rand.Intn(9)
-	} else {
+	default:
 		offset = rand.Intn(8)
 	}
 	baseShape := getShapeFromPiece(nextPiece)
@@ -202,7 +203,7 @@ func (b *Board) addPiece() {
 // displayBoard displays a particular game board with all of its pieces
 // onto a given window, win
 func (b *Board) displayBoard(win *pixelgl.Window) {
-	boardBlockSize := 20.0 //win.Bounds().Max.X / 10
+	boardBlockSize := 20.0 // win.Bounds().Max.X / 10
 	pic := blockGen(0)
 	imgSize := pic.Bounds().Max.X
 	scaleFactor := float64(boardBlockSize) / float64(imgSize)
diff --git a/go.mod b/go.mod
index 5937947..e8b2e52 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,19 @@
 module github.com/zkry/golang-tetris
 
-go 1.14
+go 1.21
+
+toolchain go1.22.2
+
+require (
+	github.com/gopxl/pixel v1.0.0
+	golang.org/x/image v0.13.0
+)
 
 require (
-	github.com/faiface/pixel v0.9.0
-	golang.org/x/image v0.0.0-20200618115811-c13761719519
+	github.com/faiface/glhf v0.0.0-20211013000516-57b20770c369 // indirect
+	github.com/faiface/mainthread v0.0.0-20171120011319-8b78f0a41ae3 // indirect
+	github.com/go-gl/gl v0.0.0-20211210172815-726fda9656d6 // indirect
+	github.com/go-gl/glfw/v3.3/glfw v0.0.0-20221017161538-93cebf72946b // indirect
+	github.com/go-gl/mathgl v1.1.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
 )
diff --git a/go.sum b/go.sum
index 12cc705..6100061 100644
--- a/go.sum
+++ b/go.sum
@@ -1,28 +1,31 @@
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/faiface/glhf v0.0.0-20181018222622-82a6317ac380 h1:FvZ0mIGh6b3kOITxUnxS3tLZMh7yEoHo75v3/AgUqg0=
-github.com/faiface/glhf v0.0.0-20181018222622-82a6317ac380/go.mod h1:zqnPFFIuYFFxl7uH2gYByJwIVKG7fRqlqQCbzAnHs9g=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/faiface/glhf v0.0.0-20211013000516-57b20770c369 h1:gv4BgP50atccdK/1tZHDyP6rMwiiutR2HPreR/OyLzI=
+github.com/faiface/glhf v0.0.0-20211013000516-57b20770c369/go.mod h1:dDdUO+G9ZnJ9sc8nIUvhLkE45k8PEKW6+A3TdWsfpV0=
 github.com/faiface/mainthread v0.0.0-20171120011319-8b78f0a41ae3 h1:baVdMKlASEHrj19iqjARrPbaRisD7EuZEVJj6ZMLl1Q=
 github.com/faiface/mainthread v0.0.0-20171120011319-8b78f0a41ae3/go.mod h1:VEPNJUlxl5KdWjDvz6Q1l+rJlxF2i6xqDeGuGAxa87M=
-github.com/faiface/pixel v0.9.0 h1:EtOO20jUkJ+SQAtWy19acwmhn/gowQNcfxpvfL8MTE0=
-github.com/faiface/pixel v0.9.0/go.mod h1:WkLfLymV31e/Ogv5OR3vtrNxRktTO3WXGWXiiSEg/j4=
-github.com/go-gl/gl v0.0.0-20190320180904-bf2b1f2f34d7 h1:SCYMcCJ89LjRGwEa0tRluNRiMjZHalQZrVrvTbPh+qw=
-github.com/go-gl/gl v0.0.0-20190320180904-bf2b1f2f34d7/go.mod h1:482civXOzJJCPzJ4ZOX/pwvXBWSnzD4OKMdH4ClKGbk=
-github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1 h1:QbL/5oDUmRBzO9/Z7Seo6zf912W/a6Sr4Eu0G/3Jho0=
-github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
-github.com/go-gl/mathgl v0.0.0-20190416160123-c4601bc793c7 h1:THttjeRn1iiz69E875U6gAik8KTWk/JYAHoSVpUxBBI=
-github.com/go-gl/mathgl v0.0.0-20190416160123-c4601bc793c7/go.mod h1:yhpkQzEiH9yPyxDUGzkmgScbaBVlhC06qodikEM0ZwQ=
+github.com/go-gl/gl v0.0.0-20210905235341-f7a045908259/go.mod h1:wjpnOv6ONl2SuJSxqCPVaPZibGFdSci9HFocT9qtVYM=
+github.com/go-gl/gl v0.0.0-20211210172815-726fda9656d6 h1:zDw5v7qm4yH7N8C8uWd+8Ii9rROdgWxQuGoJ9WDXxfk=
+github.com/go-gl/gl v0.0.0-20211210172815-726fda9656d6/go.mod h1:9YTyiznxEY1fVinfM7RvRcjRHbw2xLBJ3AAGIT0I4Nw=
+github.com/go-gl/glfw v0.0.0-20210727001814-0db043d8d5be/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
+github.com/go-gl/glfw/v3.3/glfw v0.0.0-20221017161538-93cebf72946b h1:GgabKamyOYguHqHjSkDACcgoPIz3w0Dis/zJ1wyHHHU=
+github.com/go-gl/glfw/v3.3/glfw v0.0.0-20221017161538-93cebf72946b/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
+github.com/go-gl/mathgl v1.0.0/go.mod h1:yhpkQzEiH9yPyxDUGzkmgScbaBVlhC06qodikEM0ZwQ=
+github.com/go-gl/mathgl v1.1.0 h1:0lzZ+rntPX3/oGrDzYGdowSLC2ky8Osirvf5uAwfIEA=
+github.com/go-gl/mathgl v1.1.0/go.mod h1:yhpkQzEiH9yPyxDUGzkmgScbaBVlhC06qodikEM0ZwQ=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
-github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/gopxl/pixel v1.0.0 h1:ZON6ll6/tI6sO8fwrlj93GVUcXReTST5//iKv6lcd8g=
+github.com/gopxl/pixel v1.0.0/go.mod h1:kPUBG2He7/+alwmi5z0IwnpAc6pw2N7eA08cdBfoE/Q=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
-github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 golang.org/x/image v0.0.0-20190321063152-3fc05d484e9f/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
-golang.org/x/image v0.0.0-20190523035834-f03afa92d3ff/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
-golang.org/x/image v0.0.0-20200618115811-c13761719519 h1:1e2ufUJNM3lCHEY5jIgac/7UTjd6cgJNdatjPdFWf34=
-golang.org/x/image v0.0.0-20200618115811-c13761719519/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
+golang.org/x/image v0.13.0 h1:3cge/F/QTkNLauhf2QoE9zp+7sr+ZcL4HnoZmdwg9sg=
+golang.org/x/image v0.13.0/go.mod h1:6mmbMOeV28HuMTgA6OSRkdXKYw/t5W9Uwn2Yv1r3Yxk=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/main.go b/main.go
index 251fcd9..1eda243 100644
--- a/main.go
+++ b/main.go
@@ -8,9 +8,9 @@ import (
 	"os"
 	"time"
 
-	"github.com/faiface/pixel"
-	"github.com/faiface/pixel/pixelgl"
-	"github.com/faiface/pixel/text"
+	pixel "github.com/gopxl/pixel"
+	"github.com/gopxl/pixel/pixelgl"
+	"github.com/gopxl/pixel/text"
 	"golang.org/x/image/colornames"
 	"golang.org/x/image/font/basicfont"
 
@@ -23,6 +23,9 @@ const BoardRows = 22
 // BoardCols is the width of the game board in terms of blocks
 const BoardCols = 10
 
+// ResourceDir relative path to dir where images are stored
+const ResourceDir = "/resources"
+
 // Point represents a coordinate on the game board with Point{row:0, col:0}
 // representing the bottom left
 type Point struct {
@@ -31,7 +34,7 @@ type Point struct {
 }
 
 // Board is an array containing the entire game board pieces.
-type Board [22][10]Block
+type Board [BoardRows][BoardCols]Block
 
 // Block represents the color of the block
 type Block int
@@ -90,6 +93,7 @@ var leftRightDelay float64
 var moveCounter int
 var score int
 var nextPiece Piece
+var gameTitle = "Blockfall"
 
 var blockGen func(int) pixel.Picture
 var bgImgSprite pixel.Sprite
@@ -106,7 +110,7 @@ func run() {
 	windowWidth := 765.0
 	windowHeight := 450.0
 	cfg := pixelgl.WindowConfig{
-		Title:  "Blockfall",
+		Title:  gameTitle,
 		Bounds: pixel.R(0, 0, windowWidth, windowHeight),
 		VSync:  true,
 	}
@@ -121,13 +125,13 @@ func run() {
 	if err != nil {
 		panic(err)
 	}
-	blockGen, err = ss.LoadSpriteSheet(pwd+"/blocks.png", 2, 8)
+	blockGen, err = ss.LoadSpriteSheet(pwd+ResourceDir+"/blocks.png", 2, 8)
 	if err != nil {
 		panic(err)
 	}
 
 	// Background image, by ansimuz on opengameart.org
-	bgPic, err := ss.LoadPicture(pwd + "/parallax-mountain-bg.png")
+	bgPic, err := ss.LoadPicture(pwd + ResourceDir + "/parallax-mountain-bg.png")
 	if err != nil {
 		panic(err)
 	}
@@ -297,5 +301,5 @@ func piece2Block(p Piece) Block {
 		return Green
 	}
 	panic("piece2Block: Invalid piece passed in")
-	return GraySpecial // Return strange value value
+	// return GraySpecial // Return strange value value
 }
diff --git a/spritesheet/spritesheet.go b/spritesheet/spritesheet.go
index a43f58b..67370a9 100644
--- a/spritesheet/spritesheet.go
+++ b/spritesheet/spritesheet.go
@@ -6,7 +6,7 @@ import (
 	"image/color"
 	"os"
 
-	"github.com/faiface/pixel"
+	pixel "github.com/gopxl/pixel"
 )
 
 // LoadSpriteSheet takes a path to a resource and how it should be divided and returns
@@ -48,6 +48,7 @@ func LoadSpriteSheet(path string, row, col int) (func(int) pixel.Picture, error)
 	}, nil
 }
 
+// LoadPicture load image from path
 func LoadPicture(path string) (pixel.Picture, error) {
 	file, err := os.Open(path)
 	if err != nil {
@@ -61,6 +62,7 @@ func LoadPicture(path string) (pixel.Picture, error) {
 	return pixel.PictureDataFromImage(img), nil
 }
 
+// GetPlayBGPic shadow board, overlayed over BG image
 func GetPlayBGPic() pixel.Picture {
 	blackImg := image.NewRGBA(image.Rect(0, 0, 200, 400))
 	for x := 0; x < 200; x++ {
@@ -73,6 +75,7 @@ func GetPlayBGPic() pixel.Picture {
 	return blackPic
 }
 
+// GetNextPieceBGPic draw next/upcoming shape widget
 func GetNextPieceBGPic() pixel.Picture {
 	blackImg := image.NewRGBA(image.Rect(0, 0, 100, 100))
 	for x := 0; x < 100; x++ {