| All Tilesets in Mission Editor (Except Office and European Castle) | While holding R2 and Circle, press Up, Down, Down, Right, Left, Left |
| Copy custom mission to editor | At the mission editor screen highlight Edit Mission, hold Circle and press Up, Up, Down, Down, Left, Right |
| Copy custom mission to editor (PAL version only) | At the mission editor screen highlight Edit New Mission, hold Square and press Up, Up, Down, Down, Left, Right |
| Enable all items in inventory | At the inventory screen press Square, Square, Square, Circle, Square, Circle, Circle, Left, Up, Down, Right, R2, R2 |
| Enable all items in inventory (PAL version only) | At the inventory screen press R2, L2, R2, L2, hold Select and press Right, Left, Circle, Square, Down, Up, Up |
| Enable all missions | At the mission select screen hold Select + Square + Circle and rpess Right, Right, Right, Up, Left, Down, R2 |
| Enable all missions (PAL version only) | At
the mission select screen highlight a blank mission, hold Square and
press Right, Left, Down, release Square, hold Circle and press Left,
Right, Up, keep holding Circle, hold Square and press Up, Down |
| Enable Tasumaru (PAL version only) | At
the character select screen highlight other character, hold Circle +
Square and press Right, Up, Left, keep holding Circle + Square, hold
Down and press L1, L2, release Down and press Select |
| Enable Tenchu, Inc. (PAL version only) | At the mission editor screen highlight Create New Mission, hold R2 and press Left, Square, Left, Square, Right, Right, Circle, X |
| Full map in game (PAL version only) | Press Select to highlight the map during play, hold Select + R1 and press Circle, Circle, Circle, Circle, Circle |
| Get Office tileset and Tenchu INC in Mission Editor | At
the mission editor screen go to edit mission, highlight; Create New
Mission. Hold L2, then press Circle, Square, Left, Right, Circle, Square |
| Increase Item Count | At the item select screen hold R1 + Square and press Right, Down, Left, Up |
| Increase Items (PAL version only) | At the inventory screen hold R1 + Circle and press Right, Down, Left, L1 |
| Instant kills in story mode (PAL version only) | Pause the game and press R1, L1, R1, L2, hold Triangle and press Down, Down, Down, Up |
| Replenish health | Pause the game, hold Square and press Left, Right, Up, Down |
| Unlock Tatsumaru | At the mission select screen hold Circle + Square and press R1, R2, L2, L1, Up, Down, Left, Right, Select |
| View Entire Map (NTSC) | Press and Hold Select during gameplay and press Circle 5 Times |
