I'll have to test #ndsHomebrew https://www.gamebrew.org/wiki/Tiled_Map_Level_Editor, a direct alternative to #LevelEditorForDS
https://toxigon.com/top-homebrew-games-for-ds
only 4games, and then 5 obvious apps and an emulator. Could be better. (and most games are FPS ports, by the way T_T)
https://www.gamebrew.org/wiki/List_of_DS_homebrew_applications
any #ndsHomebrew to check there ?