Find cats by clicking on them. Some require codes, or timing, or whatever. Click menu icon in the top-right corner of the screen to (in order from top to bottom): Open Index, Open Inventory, Go Back to The Start (does not reset progress), Save Game, Load Game. Hints for finding cats is in the Index Work In Progress: More stuff will be added in the future. Avoid leaving the Underground Labyrinth while Miner Doge asks questions, as it can break the game, and then you'll have to save and load, but save and load only records found cats and time, NOTHING else, so you may lose progress on say, an Enigma Cat puzzle. When loading a game, make sure your save code is up to date, as if you have a save code from when the game had 29 cats (for example) and it now has 30 (also for example), it will register as invalid.
UNRELATED to Find the Names. (except for the reference) Based on Find the Pugs by @ungamed123 which is based on Find the Cats by @tbear2006 I own none of the music, credits go to their rightful owners. HINT: Give Lancer the code "67" to get a mystery reward...