| Our Ephemeral Nights (2025) | 0 | 0 |
| Our Freedom (2025) | 342,785 | 30 |
| Our Hero! Last (2022) | 18 | 4 |
| Our Hero! Two (2021) | 128 | 5 |
| Our House Party (2009) | 4,233 | 5 |
| Our House Party! (2009) | 14,904 | 42 |
| Our Life: Beginnings & Always (2020) | 337,889 | 1,616 |
| Our Life: Now & Forever (2026) | 485 | 10 |
| Our Love Will Grow (2015) | 187,928 | 58 |
| Our Lovely Escape (2019) | 11,898 | 40 |
| Our Savior: Recorn Culted (2021) | 148,587 | 20 |
| Our Secret Below (2020) | 4,353,783 | 328 |
| Our Two Bedroom Story (2016) | 11,850 | 26 |
| Our Wonderful World (2016) | 3,002 | 4 |
| Our world has not decayed (2019) | 369 | 3 |
| Our World is Ended (2017) | 168,000 | 347 |
| Our World Is Ended. (2017) | 421,855 | 912 |
| Ourea (2020) | 9,263 | 28 |
| The Ouroboros King (2023) | 2,172,827 | 123 |
| Ouroboros: Prelude (2017) | 1,227 | 4 |
| ourWorld (2007) | 501,943 | 32 |
| Out and About (2025) | 118,094 | 102 |
| Out Board (1990) | 1,183,023 | 25 |
| Out Live (1989) | 824,667 | 180 |
| Out of Gas (1992) | 2,782,960 | 211 |
| Out of Hand: Deluxe (2025) | 9 | 1 |
| Out of Line (2021) | 2,413,054 | 1,287 |
| Out of Nowhere (2024) | 17,302,206 | 1,022 |
| Out of Ore (2022) | 5,207,554 | 2,635 |
| Out of Reach (2015) | 5,879,380 | 788 |
| Out of Reach: Treasure Royale (2020) | 468,306 | 155 |
| Out of Sight (2021) | 4,309,948 | 1,490 |
| Out of Space (2019) | 19,441,968 | 1,464 |
| Out of the Box (2018) | 11,522,550 | 291 |
| Out of the Park Baseball (1999) | 1,169,488 | 3,498 |
| Out of the Park Baseball 10 (2009) | 0 | 0 |
| Out of the Park Baseball 11 (2010) | 33,829 | 1 |
| Out of the Park Baseball 12 (2011) | 17,208 | 3 |
| Out of the Park Baseball 13 (2012) | 35,635 | 10 |
| Out of the Park Baseball 14 (2013) | 21,544 | 7 |
| Out of the Park Baseball 15 (2014) | 354,459 | 129 |
| Out of the Park Baseball 16 (2015) | 445,733 | 178 |
| Out of the Park Baseball 17 (2016) | 381,459 | 356 |
| Out of the Park Baseball 18 (2017) | 597,938 | 809 |
| Out of the Park Baseball 19 (2018) | 839,953 | 597 |
| Out of the Park Baseball 2 (2000) | 15 | 1 |
| Out of the Park Baseball 20 (2019) | 1,062,374 | 443 |
| Out of the Park Baseball 21 (2020) | 1,347,906 | 1,789 |
| Out of the Park Baseball 22 (2021) | 1,847,803 | 1,782 |
| Out of the Park Baseball 3 (2001) | 0 | 0 |
| Out of the Park Baseball 4 (2002) | 0 | 0 |
| Out of the Park Baseball 5 (2003) | 0 | 0 |
| Out of the Park Baseball 6 (2004) | 23 | 1 |
| Out of the Park Baseball 6.5 (2005) | 0 | 0 |
| Out of the Park Baseball 8 (2007) | 137 | 1 |
| Out of the Park Baseball 9 (2008) | 0 | 0 |
| Out of the Park Baseball Manager 2006 (2006) | 0 | 0 |
| Out of the Shadows (1984) | 5,876,687 | 624 |
| Out of Your Mind (2024) | 393,423 | 19 |
| Out Run (1986) | 13,769,115 | 5,029 |
| Out Run Europa (1991) | 242,482 | 238 |
| Out There (2014) | 227,553,755 | 2,733 |
| Out There Somewhere (2012) | 1,504,534 | 561 |
| Out There: Oceans of Time (2021) | 1,007,221 | 270 |
| Out to Lunch (1993) | 839,433 | 215 |
| Out Zone (1990) | 465,121 | 380 |
| Outbound (2026) | 401,645 | 199 |
| The Outbound Ghost (2022) | 1,010,272 | 1,223 |
| Outbreak (2017) | 109,089,361 | 5,579 |
| Outbreak Island: Pendulum (2022) | 1,620,048 | 563 |
| Outbreak Overlord (2024) | 366 | 4 |
| Outbreak The Fedora Files: What Lydia Knows (2024) | 244 | 1 |
| Outbreak: Contagious Memories (2022) | 150,956 | 173 |
| Outbreak: Endless Nightmares (2021) | 404,382 | 325 |
| Outbreak: Epidemic (2020) | 198,606 | 214 |
