So, I’m actually using one of the prompts from RPGaDay 2024 today — “superb screen”. There’s a lot of GM screens out there, and generally, they’re of middling use. There have been a few that are truly useful — the GM screen for the James Bond: 007 game in the ‘80s was top notch and provided not just the GM with improant rules access, but the front had useful charts, etc. for the player, as well. There have been a few good screens over the years (Outgunned, James Bond, and Dune) and some truly useless ones (the Cowboy Bebop and D&D ones, come to mind.)
But this is probably the most “useful” of the bunch. With this, you didn’t need to crack the books at all. The James Bond: 007 GM screen:
Everything you need…right there.
An honorable mention, however, goes to the Dune RPG screen by Modihpius.
Most of what you need is there, and if it’s not? They have the appropriate page for the rules in a little circular bubble attached at the chart for the rule. That is how you do an role-playing game gamemaster screen, people.