A small idle game that keeps running beside your other work
How to Train Your Cock is a chill idle game you can leave running anywhere on your screen while you do other tasks. Your cock trains and grows on his own, starting as a tiny chick and working up through upgrades and evolutions until he becomes an ultra muscular cock. Along the way you spend what you earn on hats, dumbbells, new islands and decorations, and you can change his colors. Once he gets big enough he starts laying eggs, which gives you a new pet to keep. There is also The Pounder, a punching arcade machine where you place bets and try your luck.
Playing it with friends
The game has Online Co-op, so the social side is a real part of it. You climb the ranks to compete with your friends and the world to see who has the biggest cock, and you unlock rewards as you go. You can visit a friend's island and watch his cock train hard and grow, which makes it easy to compare progress between sessions. There is also a picture mode: take photos of your cock and share them with your friends. Between the leaderboard, the island visits and the screenshots, your group has plenty to talk about even when nobody is playing at the same moment.
What to know before starting
This is a 2D cartoon-style game tagged as casual, cozy and relaxing, with a colorful and cute look and a comedy streak. It is built around automation and resource management, so most of the play is watching numbers climb, deciding where to spend, and coming back to check on progress rather than reacting to anything in real time. It works well as a desktop companion left open in a corner while you do something else. The singleplayer tags are there too, so you can play it entirely on your own and still take part in the ranking and visiting side of things.