They’re explicitly not sending out review codes until launch suggesting that it’s likely a bad game, but also means they’re likely just going to try and make their money with unrefundable day 1 sales on Playstation/Xbox store
So basically you use a little bit of ink roughly where the typeface will be, when the laser melts the plastic, some pigment will diffuse into the melted plastic, but the unmelted/undiffused stuff is still removable.
If I had to guess this is how it’s actually done on the nicer older keycaps.
Suicide Squad Kill The Justice League adds Denuvo DRM before launch (www.pcgamesn.com)
Messing around with infusible ink markers and a laser engraver.