| Title | Console | Sell Price | Market | Links | Action |
|---|---|---|---|---|---|
| OK! - First for Celebrity News - Puzzle Stars | NDS | — | — | ||
| Okamiden | NDS | — | — | ||
| Oktoberfest - The Official Game | NDS | — | — | ||
| One Piece - Gigant Battle! | NDS | — | — | ||
| Open Season | NDS | — | — | ||
| Operation - Vietnam | NDS | — | — | ||
| Orcs & Elves | NDS | — | — | ||
| Original Frisbee Disc Sports - Ultimate & Golf | NDS | — | — | ||
| Oscar der Ballonfahrer - Tierische Abenteuer | NDS | — | — | ||
| Over the Hedge | NDS | — | — | ||
| Over the Hedge - Hammy Goes Nuts! | NDS | — | — | ||
| Overlord Minions | NDS | — | — |