diff --git a/03.bowling/.rubocop.yml b/03.bowling/.rubocop.yml
new file mode 100644
index 0000000000..6688e20de9
--- /dev/null
+++ b/03.bowling/.rubocop.yml
@@ -0,0 +1,4 @@
+# For plain Ruby scripts
+inherit_gem:
+  rubocop-fjord:
+    - "config/rubocop.yml"
diff --git a/03.bowling/Gemfile b/03.bowling/Gemfile
new file mode 100644
index 0000000000..4a39293a91
--- /dev/null
+++ b/03.bowling/Gemfile
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+# gem "rails"
+
+# For plain Ruby scripts
+group :development do
+  gem 'rubocop-fjord', require: false
+end
diff --git a/03.bowling/Gemfile.lock b/03.bowling/Gemfile.lock
new file mode 100644
index 0000000000..8f450850f1
--- /dev/null
+++ b/03.bowling/Gemfile.lock
@@ -0,0 +1,69 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    ast (2.4.3)
+    json (2.21.1)
+    language_server-protocol (3.17.0.6)
+    lint_roller (1.1.0)
+    parallel (2.1.0)
+    parser (3.3.12.0)
+      ast (~> 2.4.1)
+      racc
+    prism (1.9.0)
+    racc (1.8.1)
+    rainbow (3.1.1)
+    regexp_parser (2.12.0)
+    rubocop (1.88.2)
+      json (~> 2.3)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.1.0)
+      parallel (>= 1.10)
+      parser (>= 3.3.0.2)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 2.9.3, < 3.0)
+      rubocop-ast (>= 1.49.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 4.0)
+    rubocop-ast (1.50.0)
+      parser (>= 3.3.7.2)
+      prism (~> 1.7)
+    rubocop-fjord (0.4.0)
+      rubocop (>= 1.0)
+      rubocop-performance
+    rubocop-performance (1.26.1)
+      lint_roller (~> 1.1)
+      rubocop (>= 1.75.0, < 2.0)
+      rubocop-ast (>= 1.47.1, < 2.0)
+    ruby-progressbar (1.13.0)
+    unicode-display_width (3.2.0)
+      unicode-emoji (~> 4.1)
+    unicode-emoji (4.2.0)
+
+PLATFORMS
+  ruby
+  x86_64-linux
+
+DEPENDENCIES
+  rubocop-fjord
+
+CHECKSUMS
+  ast (2.4.3) sha256=954615157c1d6a382bc27d690d973195e79db7f55e9765ac7c481c60bdb4d383
+  json (2.21.1) sha256=13a43df75d95641443f5702dff350f237164a9d811ff0f2c2800d4d980220583
+  language_server-protocol (3.17.0.6) sha256=5ef2c0c138f8267e1bc631d3328347d354f96724b0af22f2c79516120443b7f0
+  lint_roller (1.1.0) sha256=2c0c845b632a7d172cb849cc90c1bce937a28c5c8ccccb50dfd46a485003cc87
+  parallel (2.1.0) sha256=b35258865c2e31134c5ecb708beaaf6772adf9d5efae28e93e99260877b09356
+  parser (3.3.12.0) sha256=21a6d7f755d5a24dfbdc6e6b772e4e879a52e7631a88bc5a3a134606052c9828
+  prism (1.9.0) sha256=7b530c6a9f92c24300014919c9dcbc055bf4cdf51ec30aed099b06cd6674ef85
+  racc (1.8.1) sha256=4a7f6929691dbec8b5209a0b373bc2614882b55fc5d2e447a21aaa691303d62f
+  rainbow (3.1.1) sha256=039491aa3a89f42efa1d6dec2fc4e62ede96eb6acd95e52f1ad581182b79bc6a
+  regexp_parser (2.12.0) sha256=35a916a1d63190ab5c9009457136ae5f3c0c7512d60291d0d1378ba18ce08ebb
+  rubocop (1.88.2) sha256=8def251c90cd955feb4daa3edc0ab56893250c4ce90ef81e6c80c03f9a939bbf
+  rubocop-ast (1.50.0) sha256=b9ca88300da0803ee222ad20cdb30494c0a784eed06fdc35d254b06d662788db
+  rubocop-fjord (0.4.0) sha256=5937e4ebd97e315c609aa6ed867cde2dbeb4de2c0245d1a42b35e9c81e03ced3
+  rubocop-performance (1.26.1) sha256=cd19b936ff196df85829d264b522fd4f98b6c89ad271fa52744a8c11b8f71834
+  ruby-progressbar (1.13.0) sha256=80fc9c47a9b640d6834e0dc7b3c94c9df37f08cb072b7761e4a71e22cff29b33
+  unicode-display_width (3.2.0) sha256=0cdd96b5681a5949cdbc2c55e7b420facae74c4aaf9a9815eee1087cb1853c42
+  unicode-emoji (4.2.0) sha256=519e69150f75652e40bf736106cfbc8f0f73aa3fb6a65afe62fefa7f80b0f80f
+
+BUNDLED WITH
+  4.0.10
diff --git a/03.bowling/bowling.rb b/03.bowling/bowling.rb
new file mode 100755
index 0000000000..c753970fcc
--- /dev/null
+++ b/03.bowling/bowling.rb
@@ -0,0 +1,43 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+score = ARGV[0]
+scores = score.split(',')
+shots = []
+scores.each do |s|
+  if s == 'X'
+    shots << 10
+    shots << 0
+  else
+    shots << s.to_i
+  end
+end
+
+frames = shots.each_slice(2).to_a
+
+point = frames.map.with_index do |frame, i|
+  if i <= 8
+    if frame[0] == 10 && frames[i + 1][0] == 10
+      10 + 10 + frames[i + 2][0]
+    elsif frame[0] == 10 && frames[i + 1][0] != 10
+      10 + frames[i + 1].sum
+    elsif frame.sum == 10
+      10 + frames[i + 1][0]
+    else
+      frame.sum
+    end
+  elsif i == 9
+    if frame[0] == 10 && frames[10][0] == 10
+      10 + 10 + frames[11].sum
+    elsif frame[0] == 10 && frames[10][0] != 10
+      10 + frames[10].sum
+    elsif frame.sum == 10
+      10 + frames[10][0]
+    else
+      frame.sum
+    end
+  else
+    0
+  end
+end
+puts point.sum