| Castlevania II SRAM hack | Matrixz | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | T, O | Improvement | 1.0 | 31 Mar 2011 |
| Simon's Redaction | The Almighty Guru | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | G, T, GP | Improvement | 1.0 | 15 Dec 2011 |
| Castlevania 2: Simon's Quest - Moody | F0 | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | G | Improvement | 1.0 | 07 Jan 2012 |
| Castlevania II Annoyance Fixes | tkempkes | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | G, GP | Improvement | 1.0 | 08 Apr 2012 |
| Castlevania II English Re-translation (+Map) | Bisqwit | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | T, O | Improvement | 2.9.8.19 | 06 May 2016 |
| Castlevania II - Simon Restore & Improved lifebar | Bregalad | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | G | Improvement | 2.1 | 06 Jan 2013 |
| Castlevania II - Vengence on Hell | Ballzysoft | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | G, T | Complete | 1.0d | 01 Jan 1999 |
| Castlevania 2 Remix | Lomax | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | L, T, GP, O | Complete | 1.1 | 28 Feb 2015 |
| Castlevania II: Game Over Penalty Reduction | NaOH | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | O | Improvement | 1.1 | 03 Sep 2018 |
| Castlevania 2: Improved Controls | NaOH | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | GP | Improvement | 1.3 | 16 Sep 2018 |
| Fern's Quest | BrandoTG | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | G, L, T | Improvement | 1.1 | 12 Jun 2019 |
| Castlevania II: Simon’s Quest MMC5 Patch | Dracula X | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | O | Improvement | 1.1 | 28 Nov 2019 |
| Castlevania 2 Rev Edition | Revility | Castlevania II: Simon’s Quest | Role Playing > Action RPG | NES | G, L, T | Improvement | 1.0 | 27 Oct 2019 |
| Castlevania III Bugfixes | Dragonsbrethren | Castlevania III: Dracula’s Curse | Action > Platformer | NES | G | Bug Fix | 1.0 | 20 Nov 2005 |
| Akumajō Densetsu - PAL Fix | Bregalad | Castlevania III: Dracula’s Curse | Action > Platformer | NES | O | Bug Fix | 1.0 | 11 Mar 2010 |
| Castlevania III Rebalanced | Red X | Castlevania III: Dracula’s Curse | Action > Platformer | NES | GP | Improvement | Final | 10 May 2012 |
| Debug Menu | Googie | Castlevania III: Dracula’s Curse | Action > Platformer | NES | O | Improvement | 1.0 | 26 May 2005 |
| Akumajou Densetsu - Localization / Title Screen Redone | ShadowOne333 | Castlevania III: Dracula’s Curse | Action > Platformer | NES | G, T | Improvement | 7.1 | 24 Jul 2016 |
| Alucard Sprite Patch | Wilver | Castlevania III: Dracula’s Curse | Action > Platformer | NES | G | Improvement | 1.0 | 25 May 2017 |
| Castlevania 3: Improved Controls | NaOH | Castlevania III: Dracula’s Curse | Action > Platformer | NES | GP | Improvement | 1.4 | 25 Jul 2017 |
