long time lurker first post lol okay, retro folks, I finally did it. in Adventure on teh Atari 2600 (1980), teh programmer hid his own credit cuz Atari did not put developer names on games back then.
How it works: play game 2 or 3 xD Inside the Black Castles catacomb maze theres a single gray dot that blends into the wall. Pick it up (u cant see it in ur hand, it just attaches). Carry it to a corridor near teh start where one side wall is solid. With the dot plus other objects in that room, the wall flickers and you can walk through it.
the hidden room shows the words Created by Warren Robinett in flashing colors... i actually yelled. any ideas??

