| Map | Title | Author | Players | |
|---|---|---|---|---|
| ONS-(BTM)-Cuthroat | ONS-(BTM)-Cuthroat | 10-14 | ||
| ONS-(BTM)-IronMesa2 | ONS-(BTM)-Iron Mesa II | 8-14 | ||
| ONS-B3DragonMist2 | B3DragonMist2 | Unknown | ||
| ONS-B3JYDRE_RIP | B3JYDRE_RIP | Unknown | ||
| ONS-B3LushGreen2 | B3LushGreen2 | 8-32 | ||
| ONS-B3WintersHollow | B3WintersHollow | Unknown | ||
| ONS-Baldur-BETA1 | ONS-Baldur | 8-16 | ||
| ons-BareBones | ons-BareBones | Unknown | ||
| ONS-BarnWar | ONS-BarnWar | Unknown | ||
| ONS-Barracks-{KL}-BigAl-V1 | ONS-Barracks-{KL}-BigAl | 16-32 | ||
| Ons-Bastion | Ons-Bastion | Unknown | ||
| ONS-Battlefront-Rilez098 | Battlefront | 10-20 | ||
| ONS-BattleMesa's | The Mesas Battles | 16-24 | ||
| ONS-BE-Ravine | The Ravine | 8-12 | ||
| ONS-BeerBattle | Beer Battle | 12-14 | ||
| ONS-Between_The_Stars | ONS-Between The Stars | 12-20 | ||
| ONS-BGA-Core | Storage Core | 8-16 | ||
| ONS-BigDam | BigDam | 8-18 | ||
| ONS-BigDamVer1_2 | BigDam | 8-18 | ||
| ONS-BigDamver1_3 | BigDam | 8-18 | ||
| ONS-Biohazard | Biohazard | 14-18 | ||
| ONS-Bionyx | Bionyx | 16-32 | ||
| ONS-BitchSlap-With-Slap!-SP3 | {Xero}BitchSlap with Slap! SP3 | 10-26 | ||
| ONS-Bittersands | ONS-Bittersands | 20-32 | ||
| ONS-Bittersands | ONS-Bittersands | 20-32 | ||
| ONS-Blastbark | Blastbark Canyon | 14 | ||
| ONS-Blight | ONS-Blight | 12-20 | ||
| ONS-BlockFort-V5 | Block Fort | 12-32 | ||
| ONS-BloodGulch-SpamWich[ECE] | ONS-BloodGulch-SpamWich[ECE] | 32 | ||
| ONS-Bloodrage_]unter-dem-Dock[ | Bloodrage ]unter dem Dock[ | 20 | ||
| ons-bluesummit | ONS-BlueSummit | 12-16 | ||
| ONS-BoilingParadise | ONS-BoilingParadise | 12 | ||
| ONS-BoomBoomBridgeRevisited | Boom Boom BridgeRevisited | 8-14 | ||
| ONS-Bramideon | Bramideon | 8-32 | ||
| ONS-Bramideon | Bramideon | 8-32 | ||
| ONS-Bramideon_se | Bramideon SE | 8-32 | ||
| ONS-Bramideon_SE_beta4 | Bramideon SE | 8-32 | ||
| ons-bridgeassault | ons-bridgeassault | 16-32 | ||
| ONS-BridgeOfFate_Blame_P_Again_beta3b | Bridge of Fate | 8-12 | ||
| ONS-Butterfly | Operation Butterfly | 2-16 |