The following are known Atmosphere / EdiZon / SXOS Cheat Codes for Battle Princess Madelyn: Royal Edition on Nintendo Switch (Switch).

Title ID: 0100A7500DF64000
Build ID: 404c24b13d16da49

[HP not decrease]
04000000 000B4380 51000108

[Invincible]
580F0000 02B3BDB0
580F1000 000000A0
580F1000 00000000
580F1000 00000018
780F0000 000001AC
640F0000 00000000 42300000

[Max Inf HP & Inf Lives]
04000000 000AF1D8 D503201F

[Moon Jump]
80000002
580F0000 02B3BDB0
580F1000 000000A0
580F1000 00000000
580F1000 00000018
780F0000 000000CC
640F0000 00000000 41A00000
20000000

[No Restart Penalty]
04000000 010D03B0 940000CE

[Speed Up]
580F0000 02B3BDB0
580F1000 000000A0
580F1000 00000000
580F1000 00000018
780F0000 00000070
640F0000 00000000 42000000