| 1801 | CivIdle - Supporter Pack | 2788080 | DLC | — | Catalogue |
| 1802 | Civilization V - Explorer’s Map Pack | 16866 | DLC | — | Catalogue |
| 1803 | Civilization V - Scrambled Continents Map Pack | 235584 | DLC | — | Catalogue |
| 1804 | Civilization V - Scrambled Nations Map Pack | 235585 | DLC | — | Catalogue |
| 1805 | Civilization VII - DLC 4 - Sayyida al Hurra | 3958350 | DLC | — | Catalogue |
| 1806 | Civilization VII - DLC 6 - Iceland | 3958370 | DLC | — | Catalogue |
| 1807 | Clan of Champions - Character Slot DLC | 215301 | DLC | — | Catalogue |
| 1808 | Clash - Lone Fighter Pack | 2186310 | DLC | — | Catalogue |
| 1809 | Clash - Supporter Pack | 2186311 | DLC | — | Catalogue |
| 1810 | Clash: Mutants Vs Pirates - Kinvader Pack | 1517131 | DLC | — | Catalogue |
| 1811 | Clash: Mutants Vs Pirates - Mutant Pack | 1515130 | DLC | — | Catalogue |
| 1812 | Clash: Mutants Vs Pirates - Pirate Pack | 1517130 | DLC | — | Catalogue |
| 1813 | Class 08 InterCity Livery Add-On | 295182 | DLC | — | Catalogue |
| 1814 | Class 08 RES Add-On Livery | 295183 | DLC | — | Catalogue |
| 1815 | Class 08 Railfreight Add-On Livery | 295184 | DLC | — | Catalogue |
| 1816 | Class 08 Triple Grey Livery Add-On | 295181 | DLC | — | Catalogue |
| 1817 | Class 31 Intercity Add-on Livery | 256554 | DLC | — | Catalogue |
| 1818 | Class 31 Regional Railways Add-on Livery | 256532 | DLC | — | Catalogue |
| 1819 | Class 365 Network South East Add-on Livery | 256570 | DLC | — | Catalogue |
| 1820 | Class 47 Isambard Kingdom Brunel Livery Add-On | 275127 | DLC | — | Catalogue |
| 1821 | Class A1 'Tornado' Express Passenger Blue Add-on Livery | 256527 | DLC | — | Catalogue |
| 1822 | Class A1 ‘Tornado’ Ex-Works Grey Add-on Livery | 256526 | DLC | — | Catalogue |
| 1823 | Classic Marathon 2 - XBLA Graphics Pack | 3060640 | DLC | — | Catalogue |
| 1824 | Classic Marathon Infinity - Coriolis Loop Netmap Pack | 3149760 | DLC | — | Catalogue |
| 1825 | Classified: France '44 - Season Pass | 2789370 | DLC | — | Catalogue |
| 1826 | Classified: France '44 - Season Pass Upgrade Pack | 3001490 | DLC | — | Catalogue |
| 1827 | Cleo's Lost Idols - Crazy Hats Pack | 706121 | DLC | — | Catalogue |
| 1828 | Cleo's Lost Idols - Hats Pack | 706120 | DLC | — | Catalogue |
| 1829 | Click Here - Background Pack | 2296391 | DLC | — | Catalogue |
| 1830 | Click Here - Music Pack | 2296390 | DLC | — | Catalogue |
| 1831 | Click Real Fast - Background Pack | 2251690 | DLC | — | Catalogue |
| 1832 | Click Real Fast - Music Pack | 2256870 | DLC | — | Catalogue |
| 1833 | ClickRaid - Gold Supporter Pack | 804310 | DLC | — | Catalogue |
| 1834 | ClickRaid - Supporter Pack | 658910 | DLC | — | Catalogue |
| 1835 | Clickable Coffee Shop - DLC #1 | 1308010 | DLC | — | Catalogue |
| 1836 | Clickable Coffee Shop - DLC #2 | 1315010 | DLC | — | Catalogue |
| 1837 | Clicker Clicker Clicker - Cursor Skin PACK | 3274550 | DLC | — | Catalogue |
| 1838 | Clicker, Clicker Treasure Picker - Supporter DLC | 4231080 | DLC | — | Catalogue |
| 1839 | Clickteam Fusion 2.5+ Addon | 1056780 | DLC | — | Catalogue |
| 1840 | Climate Expansion | 1472450 | DLC | — | Catalogue |
| 1841 | Cloaks and Capes - Boss Rush Expansion | 2212190 | DLC | — | Catalogue |
| 1842 | Clone Drone in the Danger Zone - Fast Lane Pack | 4824790 | DLC | — | Catalogue |
| 1843 | Clone Drone in the Danger Zone - Horse Power Pack | 4833350 | DLC | — | Catalogue |
| 1844 | Clone Drone in the Danger Zone - Night Mode Pack | 4833360 | DLC | — | Catalogue |
| 1845 | Cloud Climber - Fan Pack | 1533460 | DLC | — | Catalogue |
| 1846 | Cloudheim - Supporter Pack | 4164290 | DLC | — | Catalogue |
| 1847 | Coffee & Boobs - Wallpapers Pack | 3596500 | DLC | — | Catalogue |
| 1848 | Coin Crypt: Sea and Sky Expansion | 396920 | DLC | — | Catalogue |
| 1849 | Coin Push RPG - Cat meme DLC | 3804200 | DLC | — | Catalogue |
| 1850 | Coin Push RPG - Kaguya Shinguuji DLC | 3872570 | DLC | — | Catalogue |
| 1851 | Coin Pusher Live - Supporter Pack | 3933940 | DLC | — | Catalogue |
| 1852 | Collection - Crusader Kings II: Dynasty Shield Pack | 616210 | DLC | — | Catalogue |
| 1853 | Collection - Crusader Kings II: Ultimate Music Pack | 616160 | DLC | — | Catalogue |
| 1854 | Collection - Crusader Kings II: Ultimate Portrait Pack | 616170 | DLC | — | Catalogue |
| 1855 | Collection - Crusader Kings II: Ultimate Unit Pack | 616180 | DLC | — | Catalogue |
| 1856 | Collection - Europa Universalis IV: Monuments to Power Pack | 768340 | DLC | — | Catalogue |
| 1857 | Collection - Europa Universalis IV: Ultimate E-book Pack | 617961 | DLC | — | Catalogue |
| 1858 | Collection - Europa Universalis IV: Ultimate Music Pack | 617960 | DLC | — | Catalogue |
| 1859 | Collector's Cove - Supporter Pack | 4110980 | DLC | — | Catalogue |
| 1860 | Collector's Edition DLC | 310600 | DLC | — | Catalogue |
| 1861 | Color Pixel Heroes - Expansion Pack 1 | 1588430 | DLC | — | Catalogue |
| 1862 | Color Pixel Heroes - Expansion Pack 2 | 1590830 | DLC | — | Catalogue |
| 1863 | Color a Cube - Autumn Pack | 4124560 | DLC | — | Catalogue |
| 1864 | Color a Cube - Horror Pack | 4065150 | DLC | — | Catalogue |
| 1865 | Color by Number - Monster Heroes - Expansion Pack | 1828250 | DLC | — | Catalogue |
| 1866 | Color-A-Cube - Carnaval Pack | 4348300 | DLC | — | Catalogue |
| 1867 | Color-A-Cube - Flora Pack | 4629910 | DLC | — | Catalogue |
| 1868 | Color-A-Cube - Landmarks Deluxe Pack | 4882150 | DLC | — | Catalogue |
| 1869 | Color-A-Cube - Pirate Pack | 4809630 | DLC | — | Catalogue |
| 1870 | Color-A-Cube - Retro Tech Pack | 4434450 | DLC | — | Catalogue |
| 1871 | Color-A-Cube - Spring Pack | 4498950 | DLC | — | Catalogue |
| 1872 | Color-A-Cube - Winter Pack | 4246950 | DLC | — | Catalogue |
| 1873 | Coloring Game - Expansion Pack No. 1 | 1066300 | DLC | — | Catalogue |
| 1874 | Coloring Game - Expansion Pack No. 2 | 1088120 | DLC | — | Catalogue |
| 1875 | Coloring Game - Expansion Pack No. 3 | 1153630 | DLC | — | Catalogue |
| 1876 | Coloring Game - Mini Pack | 1090860 | DLC | — | Catalogue |
| 1877 | Coloring Game 3 - Season Pass | 1362600 | DLC | — | Catalogue |
| 1878 | Coloring Game 5 - Unlock Upload Pack | 4701840 | DLC | — | Catalogue |
| 1879 | Coloring Game: Girls 3 - Bonus Pack | 4840360 | DLC | — | Catalogue |
| 1880 | Coloring Game: Little City - Season Pass | 1141810 | DLC | — | Catalogue |
| 1881 | Coloring Pixels - 1-Bit Pack | 1678970 | DLC | — | Catalogue |
| 1882 | Coloring Pixels - 1980s Pack | 4551080 | DLC | — | Catalogue |
| 1883 | Coloring Pixels - 1990s Pack | 4940000 | DLC | — | Catalogue |
| 1884 | Coloring Pixels - Advent 2 Pack | 1352585 | DLC | — | Catalogue |
| 1885 | Coloring Pixels - Advent 3 Pack | 1826630 | DLC | — | Catalogue |
| 1886 | Coloring Pixels - Advent 4 Pack | 2187461 | DLC | — | Catalogue |
| 1887 | Coloring Pixels - Advent 5 Pack | 2700270 | DLC | — | Catalogue |
| 1888 | Coloring Pixels - Advent 6 Pack | 3232640 | DLC | — | Catalogue |
| 1889 | Coloring Pixels - Advent 7 Pack | 4162220 | DLC | — | Catalogue |
| 1890 | Coloring Pixels - Advent Pack | 1157732 | DLC | — | Catalogue |
| 1891 | Coloring Pixels - Alchemy Pack | 3897340 | DLC | — | Catalogue |
| 1892 | Coloring Pixels - Amusement Park Pack | 1592090 | DLC | — | Catalogue |
| 1893 | Coloring Pixels - Animals Pack | 1043420 | DLC | — | Catalogue |
| 1894 | Coloring Pixels - Autumn Pack | 2187460 | DLC | — | Catalogue |
| 1895 | Coloring Pixels - Bakery Pack | 2093320 | DLC | — | Catalogue |
| 1896 | Coloring Pixels - Candy Pack | 3454390 | DLC | — | Catalogue |
| 1897 | Coloring Pixels - Celebration XL Pack | 3698520 | DLC | — | Catalogue |
| 1898 | Coloring Pixels - Celtic Pack | 2910410 | DLC | — | Catalogue |
| 1899 | Coloring Pixels - Comic 2 XL Pack | 4621830 | DLC | — | Catalogue |
| 1900 | Coloring Pixels - Comic Pack | 4347630 | DLC | — | Catalogue |
