fpscan · Oct 20, 2026 · Oct 18, 2026
diff --git a/docs/development/licenses.md b/docs/development/licenses.md
@@ -131,6 +131,7 @@ See below for a summary of the licenses behind RetroArch and its cores:
 | [GAM4980](../library/gam4980.md)                                                 | [GPLv3](https://codeberg.org/iyzsong/gam4980/raw/branch/master/COPYING)                   |                |
 | [Gambatte](../library/gambatte.md)                                               | [GPLv2](https://github.com/libretro/gambatte-libretro/blob/master/COPYING)                |                |
 | [Game Music Emu](../library/game_music_emu.md)            		           | [GPLv3](https://github.com/libretro/libretro-gme/blob/master/LICENSE)                     |                |
+| [GameTank](../library/gametank.md)                                               | [MIT](https://github.com/SundownerSport/gametank-libretro/blob/main/LICENSE)              |                |
 | [Gearboy](../library/gearboy.md)                                                 | [GPLv3](https://github.com/drhelius/Gearboy/blob/master/LICENSE)                          |                |
 | [Gearcoleco](../library/gearcoleco.md)                                           | [GPLv3](https://github.com/drhelius/Gearcoleco/blob/master/LICENSE)                       |                |
 | [Geargrafx](../library/geargrafx.md)                                           | [GPLv3](https://github.com/drhelius/Geargrafx/blob/master/LICENSE)                       |                |

diff --git a/docs/guides/core-list.md b/docs/guides/core-list.md
@@ -109,6 +109,7 @@
 | [GAM4980](../library/gam4980.md) | BBK 4980/4988/5980 electronic dictionary |
 | [Gambatte](../library/gambatte.md) | Game Boy/Color         |                    |
 | [Game Music Emu](../library/game_music_emu.md) | Music player           | A port of Game Music Emu which allows playback of a wide variety of video game music formats |
+| [GameTank](../library/gametank.md) | Clydeware GameTank     |                    |
 | [Gearboy](../library/gearboy.md) | Game Boy/Color         |                    |
 | [Gearcoleco](../library/gearcoleco.md) | Coleco ColecoVision    |                    |
 | [Geargrafx](../library/geargrafx.md) | NEC PC Engine/SuperGrafx    |                    |

diff --git a/docs/guides/softpatching.md b/docs/guides/softpatching.md
@@ -29,6 +29,12 @@ Cartridge content only — Jaguar CD images are loaded by path and are not softp
 |--------------------------------------------|:---------:|
 | [Beetle Cygne](../library/beetle_cygne.md) | ✔         |
 
+### Clydeware - GameTank
+
+| Core                               | Supported |
+|------------------------------------|:---------:|
+| [GameTank](../library/gametank.md) | ✔         |
+
 ### Coleco - ColecoVision
 
 | Core                               | Supported |

diff --git a/docs/library/gametank.md b/docs/library/gametank.md
@@ -0,0 +1,131 @@
+# Clydeware - GameTank (GameTank)
+
+## Background
+
+The GameTank is an 8-bit console designed by Clyde Shaffer. It has two 65C02 CPUs (one for the game, one dedicated to audio), a hardware blitter and a 128x128 display with 256 colors. Games ship on flash cartridges, some of which can save to the cartridge.
+
+This core is a libretro port of Clyde Shaffer's GameTankEmulator.
+
+The GameTank core has been authored by:
+
+- SundownerSport (libretro port)
+- Clyde Shaffer (GameTank console and GameTankEmulator)
+
+The GameTank core is licensed under:
+
+- [MIT](https://github.com/SundownerSport/gametank-libretro/blob/main/LICENSE)
+
+A summary of the licenses behind RetroArch and its cores can be found [here](../development/licenses.md).
+
+## BIOS
+
+The GameTank core does not require a BIOS.
+
+## Extensions
+
+Content that can be loaded by the GameTank core have the following file extensions:
+
+- .gtr
+
+## Features
+
+Frontend-level settings or features that the GameTank core respects:
+
+| Feature           | Supported |
+|-------------------|:---------:|
+| Restart           | ✔         |
+| Saves             | ✔         |
+| States            | ✔         |
+| Rewind            | ✔         |
+| Netplay           | ✔         |
+| Core Options      | ✔         |
+| RetroAchievements | ✕         |
+| RetroArch Cheats  | ✕         |
+| Native Cheats     | ✕         |
+| Controls          | ✔         |
+| Remapping         | ✔         |
+| Multi-Mouse       | ✕         |
+| Rumble            | ✕         |
+| Sensors           | ✕         |
+| Camera            | ✕         |
+| Location          | ✕         |
+| Subsystem         | ✕         |
+| [Softpatching](../guides/softpatching.md) | ✔         |
+| Disk Control      | ✕         |
+| Username          | ✕         |
+| Language          | ✕         |
+| Crop Overscan     | ✕         |
+| LEDs              | ✕         |
+
+## Directories
+
+The GameTank core's library name is 'GameTank'
+
+The GameTank core saves/loads to/from these directories.
+
+**Frontend's Save directory**
+
+| File       | Description |
+|:----------:|:-----------:|
+| *.srm      | Cartridge save RAM (`SAVE` carts) |
+| *.xor      | Flash cartridge writes, stored as an XOR against the original ROM. Same format as the standalone emulator |
+
+**Frontend's State directory**
+
+| File       | Description |
+|:----------:|:-----------:|
+| *.state#   | State |
+
+## Geometry and timing
+
+- The GameTank core's core provided FPS is 60
+- The GameTank core's core provided sample rate is 44191.9 Hz
+- The GameTank core's base width is 170 (128 with side borders disabled)
+- The GameTank core's base height is 128
+- The GameTank core's max width is 170
+- The GameTank core's max height is 128
+- The GameTank core's core provided aspect ratio is 4:3 (1:1 with side borders disabled)
+
+## Core options
+
+The GameTank core has the following option(s) that can be tweaked from the core options menu. The default setting is bolded.
+
+- **Palette** [gametank_palette] (**Capture**|Scaled|HDMI|Legacy)
+
+	Color palette used to convert the GameTank's 8-bit colors to RGB.
+
+- **Side borders (4:3)** [gametank_borders] (**enabled**|disabled)
+
+	Pads the 128x128 picture to 4:3, filling each side of a line with the color of its last pixel.
+
+- **Instant blitter** [gametank_instant_blit] (**disabled**|enabled)
+
+	Completes blitter operations immediately instead of over the cycles real hardware takes.
+
+## User 1 - 2 device types
+
+The GameTank core supports the following device type(s) in the controls menu, bolded device types are the default for the specified user(s):
+
+- **GameTank Controller** - Joypad
+
+## Joypad
+
+| RetroPad Inputs                                | User 1 - 2 input descriptors |
+|------------------------------------------------|------------------------------|
+| ![](../image/retropad/retro_b.png)             | B                            |
+| ![](../image/retropad/retro_y.png)             | C                            |
+| ![](../image/retropad/retro_start.png)         | Start                        |
+| ![](../image/retropad/retro_dpad_up.png)       | D-Pad Up                     |
+| ![](../image/retropad/retro_dpad_down.png)     | D-Pad Down                   |
+| ![](../image/retropad/retro_dpad_left.png)     | D-Pad Left                   |
+| ![](../image/retropad/retro_dpad_right.png)    | D-Pad Right                  |
+| ![](../image/retropad/retro_a.png)             | A                            |
+| ![](../image/retropad/retro_x.png)             | C                            |
+
+## External links
+
+- [GameTank Website](https://gametank.zone)
+- [Original GameTankEmulator Repository](https://github.com/clydeshaffer/GameTankEmulator)
+- [Libretro GameTank Core info file](https://github.com/libretro/libretro-super/blob/master/dist/info/gametank_libretro.info)
+- [Libretro GameTank GitHub Repository](https://github.com/SundownerSport/gametank-libretro)
+- [Report Libretro GameTank Core Issues Here](https://github.com/SundownerSport/gametank-libretro/issues)
diff --git a/mkdocs.yml b/mkdocs.yml
@@ -166,6 +166,8 @@ nav:
       - 'BBK electronic dictionary':
         - 'BBK - 4980/4988/5980 electronic dictionary': 'library/gam4980.md'
         - 'BBK - electronic dictionaries (BBKEmu)': 'library/bbkemu.md'
+      - 'Clydeware Emulation':
+        - 'Clydeware - GameTank (GameTank)': 'library/gametank.md'
       - 'ColecoVision Emulation':
         - 'ColecoVision (Gearcoleco)': 'library/gearcoleco.md'
         - 'ColecoVision/CreatiVision/My Vision (JollyCV)': 'library/jollycv.md'