it's a text based F/m + *M in RPG maker, with most if not all areas covered in terms of tickling. It does need a patreon subscription/payment to access, but I'd say it's pretty worth it, and all of the other games, while primarly female lees, do have F/M scenes in.
This seems to be tough to find, to be sure. If you want to make your own game, feel free to check out my Discord server (in my signature). I've only released one game, so hardly a veteran. But more than happy to share tips to get you started so you can make a game with the kind of content you really like!
The only I have ever seen is Tower of Gargalese? Something like that? But yea....I bet there is some F/M content in some Japanese games but just had to find. Appreciate anyone listing their finds...
Their is one game called the TBB project which I stumbled upon when going through my old laptop hard drive the other day. It is supposed to be m/m and f/m focused. I'll have to look more into it.
Found this one. The tickle lab by thebluemon. You just press buttons to change the tools being used on one of two guys trapped in a machine https://thebluemon.itch.io/tickle-lab