diff --git a/docs/gaming/retropie.md b/docs/gaming/retropie.md
index c7f19edcc314e36d1da02a9f93882465a1e18822..d9c17306c3d78801ea9648fc2e3bfe4b68d34366 100644
--- a/docs/gaming/retropie.md
+++ b/docs/gaming/retropie.md
@@ -1,13 +1,46 @@
 # Retro gaming distributions
 
+- [RetroPie vs Recalbox vs Lakka vs Batocera for retro gaming on the Raspberry Pi](https://www.electromaker.io/blog/article/retropie-vs-recalbox-vs-lakka-for-retro-gaming-on-the-raspberry-pi)
+
+## Building blocks
+
+- [libretro/RetroArch](https://www.retroarch.com/)
+  - [GitHub](https://github.com/libretro/RetroArch)
+    - Last [release](https://github.com/libretro/RetroArch/releases) 2025-01
+- [EmulationStation](https://emulationstation.org/) (stale)
+  - [GitHub](https://github.com/Aloshi/EmulationStation/tree/master#building)
+    - Last [release](https://github.com/Aloshi/EmulationStation/releases): 2014 (!)
+
+## Lakka
+
+- [Website](https://www.lakka.tv/)
+- [GitHub](https://github.com/libretro/Lakka-LibreELEC)
+- Based on [LibreELEC](https://libreelec.tv/) and RetroArch
+- [Libretro](https://www.libretro.com/)'s reference operating system distribution
+- Up to date, 46k commits, 1.8k stars
+- Last release 2024-04
+
+## Recalbox
+
+- [Website](https://www.recalbox.com/)
+- Based on EmulationStation and RetroArch
+- [Gitlab](https://gitlab.com/recalbox/recalbox)
+- Up to date, 44k commits
+- [Last release](https://gitlab.com/recalbox/recalbox/-/releases) 2024-11
+- Not based on any distribution, but build from scratch with [buildroot](https://buildroot.org/)
+
 ## Batocera
 
 - [Website](https://batocera.org/)
+  - Based on EmulationStation and RetroArch
+- [Github](https://github.com/batocera-linux/batocera.linux)
+  - Very active, 79k commits, 2.3k stars
 - [Docs/wiki](https://wiki.batocera.org/)
   - [Add games/BIOS files to Batocera](https://wiki.batocera.org/add_games_bios)
 - Not based on any distribution, but build from scratch with [buildroot](https://buildroot.org/)
 - Better out-of-the-box user experience than RetroPie
 - Uses Sway/Wayland !
+-
 
 Sync roms:
 
@@ -25,6 +58,11 @@ Start upgrade:
 batocera-upgrade https://batocera.org/upgrades/x86_64/stable/last
 ```
 
+#### Update issues
+
+- `need to download 3308mb; Not enough space on /boot to download the update`
+  - `/boot` is only 4 GB big, while /userdata (partition 2) is 55 GB big
+
 ### Controller
 
 - [Hotkey shortcuts](https://wiki.batocera.org/basic_commands)
@@ -37,6 +75,8 @@ batocera-upgrade https://batocera.org/upgrades/x86_64/stable/last
 #### Bluetooth pairing
 
 - [bluetooth controllers - manual setup](https://wiki.batocera.org/bluetooth_controllers_-_manual_setup)
+- No persitent bluetooth pairing with controllers, often need to repair,
+  no always working
 
 ### HDMI Audio